ashworth college MA260 full course (assignment+online exam) latest 2015 december

ashworth college MA260 online exam 1 latest 2015 decemberQuestion 1 of 205.0/ 5.0 PointsA student wanted to know the favorite lunch at a large high school with a closed campus. What is the first step in conducting a statistical study to answer the question?A. Select a random sample of students.B. State the goal of the study precisely.C. Select a random sample of students and teachers.D. Select a random sample of teachers.Question 2 of 200.0/ 5.0 PointsWhich is the best fertilizer for Mr. Jimenez’ backyard grass? Select the type of study most appropriate to the question.A. ExperimentalB. Experimental blindedC. Case-controlled observationalD. ObservationalQuestion 3 of 200.0/ 5.0 PointsA nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly assigns half of a group of overweight persons to a treatment group who are given the herb with instructions for its use and a planned diet for six weeks. The other half of the group is given the same diet without the herb. A nurse at the nutrition center weighs each subject on Friday of each week. Select the potential source of confounding.A. The placebo effectB. Method of assignment to treatment and control groupsC. Experimenter effectD. The study is essentially free of confounding sourcesQuestion 4 of 205.0/ 5.0 PointsA sample consists of every 49th student from a group of 496 students. Identify the type of sampling used.A. SystematicB. ClusterC. ConvenienceD. RandomQuestion 5 of 205.0/ 5.0 PointsHumanities majors spend an average of $115 per course on books.Mathematics majors spend an average of $70 per course on books. What isthe percent difference between the two amounts relative to the amountfor mathematics majors (round to the nearest percent)?A. 64%B. 39%C. 50%D. 42%Question 6 of 200.0/ 5.0 PointsConvert 5.65 to a percent.A. 565%B. 5.65%C. 0.565%D. 56.5%Question 7 of 205.0/ 5.0 PointsTo avoid working late, a quality control analyst simply inspects the first 100 items produced in a day. Identify the type of sampling used.A. StratifiedB. ClusterC. ConvenienceD. RandomQuestion 8 of 205.0/ 5.0 PointsThe size of an e-mail file is stated as 210 kB, but the file size is actually 220.5 kB. What is the absolute error?A. 5%B. 10%C. 10.5 kBD. -10.5 kBQuestion 9 of 205.0/ 5.0 PointsDetermine which of the four levels of measurement is most appropriate for the statement below.Ages of survey respondents.A. RatioB. IntervalC. OrdinalD. NominalQuestion 10 of 205.0/ 5.0 PointsThe father of a junior high school student wants to determine the most popular book among junior high students. Select the sample with the least potential bias.A. A randomly selected group of 10 book sellersB. A randomly selected group of 30 junior high studentsC. A randomly selected group of 30 junior high students leaving the public libraryD.The group of 30 junior high students attending the birthday party of theresearcher’s childQuestion 11 of 200.0/ 5.0 PointsThe results of a poll are stated as follows: “Based on a survey of 156 randomly selected students, 90% of the student body of 2870 students agree that no student should have to take final exams in two consecutive exam periods”. If 2578 students actually agree, then what is the absolute error in the reported result?A. 5 studentsB. 287 studentsC. 0.17%D. 292 studentsQuestion 12 of 205.0/ 5.0 PointsA botany student counted 11 blades of grass in one square centimeter oflawn and measured the lawn as a rectangle 61 m by 31 m. She reportedthat there were 208,010,000 blades of grass in the lawn. The precisionof her conclusion:A. correctly represents her measurements.B. is less than her measurements warrant.C. could be greater if she used a more precise calculator.D. is excessive given her measurements.Question 13 of 205.0/ 5.0 PointsConvert 13% to decimal form.A. 0.013B. 0.13C. 1.3D. 13Question 14 of 205.0/ 5.0 PointsTemperatures in degrees Fahrenheit of the ocean at various depths:A. RatioB. IntervalC. OrdinalD. NominalQuestion 15 of 200.0/ 5.0 PointsTwo statements are given below. Select the statement for which a ratio of the measurements is meaningful. State “Neither” or “Both” if appropriate.1 – Kasheta ran the race in 22.3 sec, and Louisa ran the same race in 26.4 sec.2 – Juan gets out of school at 2:45 PM, and Aito gets out of school at 3:15 PM.A. Kasheta ran the race in 22.3 sec, and Louisa ran the same race in 26.4 sec.B. NeitherC. BothD. Juan gets out of school at 2:45 PM, and Aito gets out of school at 3:15 PM.Question 16 of 200.0/ 5.0 PointsSoft drink sizes: small, medium, large:A. Qualitative, nominalB. Quantitative, ordinalC. Quantitative, ordinal, discreteD. Qualitative, ordinalQuestion 17 of 205.0/ 5.0 PointsWhich data provide the answer to the question: “How frequently can a student at Eureka College be expected to study more than three hours a day?”A. Of 100 students surveyed, 43 reported that they study at least three hours a day twice a week.B. Of 100 students surveyed, 43 reported that they have studied at least three hours a day.C. Of 100 students surveyed, 43 reported that they studied at least three hours a day twice last week.D. Of 100 students surveyed, 43 reported that they intend to study at least three hours a day next week.Question 18 of 205.0/ 5.0 PointsA poll of 700 persons attending the Taste of Chicago showed that 455 persons, 65% of the sample, believed that the food was overpriced. It is estimated that 1,250,000 persons attend the Taste. Statistics suggest that, although 65% plus or minus 5% of attendees believe that the food is overpriced, the Taste is a popular event. The raw data of the study is (are)A. 65% of the sample.B. 700 persons, 455 persons.C. 1,250,000 persons, 700 persons, 455 persons.D. (60%, 70%).Question 19 of 205.0/ 5.0 PointsCompared with a metric scale that has grams as the smallest division, a scale with milligrams as the smallest division:A. will guarantee measurements that are more accurate, but not necessarily more precise.B. will guarantee measurements that are more precise and more accurate.C. will guarantee measurements that are more precise, but not necessarily more accurate.D. will not guarantee measurements that are more accurate or more precise.Question 20 of 200.0/ 5.0 PointsSuppose that the cost of a statistics text was $50 in 1985 and is $100 in 2000. What is the ‘Statistics Text Index’ number, rounded to the nearest tenth, for the 2000 edition with the 1985 price as the reference value?A. 20.0B. 200.0C. 50.0D. 2.0ashworth college MA260 online exam 1 latest 2015 decemberPart 1 of 1 – 0.0/ 100.0 PointsQuestion 1 of 200.0/ 5.0 PointsConvert 13% to decimal form.A. 0.013B. 0.13C. 1.3D. 13Question 2 of 200.0/ 5.0 PointsA homeowner put a brand-name fertilizer/weed killer on half of his lawn and a generic fertilizer/weed killer on the other half. After three weeks, the generic side had 1 weed per square meter, the other side 1.7 weeds per square meter. The generic side required two mowings in the 3 weeks, the brand-name side one. The homeowner concluded that the generic was superior to the brand-name. Determine which evaluation guideline applies best in questioning the results of the described study.A. Consider possible confounding variables.B. Consider the sample.C. Consider the type of study.D. Consider the source.Question 3 of 200.0/ 5.0 PointsA nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly assigns half of a group of overweight persons to a treatment group who are given the herb with instructions for its use and a planned diet for six weeks. The other half of the group is given parsley with the same instructions and same diet. A nurse at the nutrition center weighs each subject on Friday of each week. Select the potential source of confounding.A. Placebo effectB. Experimenter effectC. Method of assignment to treatment and control groupsD. The study is essentially free of potential confounding.Question 4 of 200.0/ 5.0 PointsA U.S. government report stated that, “With bank interest rates around1.0%, 8% of wage earners believe it worthwhile to keep money in asavings account. However, at 3.0% interest, 36% of wage earners believeit worthwhile to keep money in a savings account. The margin of errorfor both studies is 4 percentage points.”. A proper conclusion from thestudies is that:A. increasing the interest rate from 1% to 3% will increase the number ofpersons saving money in a savings account.B. increasing the interest rate may well have no effect on the number ofpersons saving money in a savings account.C. increasing the interest rate will increase the number of persons savingmoney in a savings account.D. the interest rate difference between 1% and 3% may well have no effecton the number of persons saving money in a savings account.Question 5 of 200.0/ 5.0 PointsCompared with a metric scale that has grams as the smallest division, a scale with milligrams as the smallest division:A. will guarantee measurements that are more accurate, but not necessarily more precise.B. will guarantee measurements that are more precise and more accurate.C. will guarantee measurements that are more precise, but not necessarily more accurate.D. will not guarantee measurements that are more accurate or more precise.Question 6 of 200.0/ 5.0 PointsA botany student counted 11 blades of grass in one square centimeter oflawn and measured the lawn as a rectangle 61 m by 31 m. She reportedthat there were 208,010,000 blades of grass in the lawn. The precisionof her conclusion:A. correctly represents her measurements.B. is less than her measurements warrant.C. could be greater if she used a more precise calculator.D. is excessive given her measurements.Question 7 of 200.0/ 5.0 PointsOne month before a recall election, a poll of 500 Wisconsin voters showed that 46% planned to vote for the Democratic challenger Tom Barrett and 45% planned to vote for Republican Governor Scott Walker. Undecided voters constituted another 9%. The margin of error was 5 percentage points. What conclusion can you draw from this poll?A. Barrett will win the election.B. Walker can’t get over 50% of the votes.C. The race is too close to call.D. No one will win.Question 8 of 200.0/ 5.0 PointsConvert 5/16 to a percent.A. 31.25%B. 0.3125%C. 3.125%D. 0.03125%Question 9 of 200.0/ 5.0 PointsA student wanted to know the favorite lunch at a large high school with a closed campus. What is the first step in conducting a statistical study to answer the question?A. Select a random sample of students.B. State the goal of the study precisely.C. Select a random sample of students and teachers.D. Select a random sample of teachers.Question 10 of 200.0/ 5.0 PointsTemperatures in degrees Fahrenheit of the ocean at various depths:A. RatioB. IntervalC. OrdinalD. NominalQuestion 11 of 200.0/ 5.0 PointsSoft drink sizes: small, medium, large:A. Qualitative, nominalB. Quantitative, ordinalC. Quantitative, ordinal, discreteD. Qualitative, ordinalQuestion 12 of 200.0/ 5.0 PointsHumanities majors spend an average of $115 per course on books.Mathematics majors spend an average of $70 per course on books. What isthe percent difference between the two amounts relative to the amountfor mathematics majors (round to the nearest percent)?A. 64%B. 39%C. 50%D. 42%Question 13 of 200.0/ 5.0 PointsThe results of a poll are stated as follows: “Based on a survey of 156 randomly selected students, 90% of the student body of 2870 students agree that no student should have to take final exams in two consecutive exam periods”. If 2578 students actually agree, then what is the absolute error in the reported result?A. 5 studentsB. 287 studentsC. 0.17%D. 292 studentsQuestion 14 of 200.0/ 5.0 PointsWhich is the best fertilizer for Mr. Jimenez’ backyard grass? Select the type of study most appropriate to the question.A. ExperimentalB. Experimental blindedC. Case-controlled observationalD. ObservationalQuestion 15 of 200.0/ 5.0 PointsA college student who does laundry infrequently wants to determine the effect of bluing on what should be white clothes. Select the sample most representative of the population.A. Reports of two friends, one of whom was given bluingB. The reports of an internet chatroom on laundry techniquesC. Two loads of personal wash, one with, one without bluingD.Two loads of wash, one personal, one of a friend, the bluing assigned bya coin flipQuestion 16 of 200.0/ 5.0 PointsCompared with a stopwatch that gives readings as –. – seconds, a stopwatch that gives readings as –. – – seconds is:A. more accurate, but not necessarily more precise.B. more precise and more accurate.C. not necessarily more precise or more accurate.D. more precise, but not necessarily more accurate.Question 17 of 200.0/ 5.0 PointsThe father of a junior high school student wants to determine the most popular book among junior high students. Select the sample with the least potential bias.A. A randomly selected group of 10 book sellersB. A randomly selected group of 30 junior high studentsC. A randomly selected group of 30 junior high students leaving the public libraryD.The group of 30 junior high students attending the birthday party of theresearcher’s childQuestion 18 of 200.0/ 5.0 PointsConvert 5.65 to a percent.A. 565%B. 5.65%C. 0.565%D. 56.5%Question 19 of 200.0/ 5.0 PointsA poll was taken of a random sample of 1189 college students. Of thesestudents, 789 reported that they had a drinking binge (more than 10drinks in an evening) in the past month. Select the most believable conclusion.A. About 66.358% of college students indulged in binge drinking last month.B. Of the 23,456,321 college students in the country, 15,565,212 indulgedin binge drinking last month.C. About 65% of college students indulge in binge drinking.D. About 65% of college students indulged in binge drinking in the past month.Question 20 of 200.0/ 5.0 PointsDetermine which of the four levels of measurement is most appropriate for the statement below.Ages of survey respondents.A. RatioB. IntervalC. OrdinalD. Nominalashworth college MA260 online exam 2 latest 2015 decemberPart 1 of 1 – 65.0/ 100.0 PointsQuestion 1 of 200.0/ 5.0 PointsA nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40. Use the histogram to answer the question. The blood pressure readings were rounded up to the next whole number.Approximately what percentage of the people aged 25–40 had a systolic blood pressure reading greater than or equal to 130?A. 15%B. 28%C. 75%D. 90%Question 2 of 205.0/ 5.0 PointsThe data below represent the results of a poll in which the following questions was asked: “To what degree are you satisfied with your current health insurance?” Which pie chart below represents the given data set?Very 14.5%Somewhat 26.3%Not at all 36.8%No opinion 22.4%A.B.C. Both represent the data.D. Neither represent the data.Question 3 of 205.0/ 5.0 PointsThe stacked bar chart below shows the percentages of death due to cancer in four geographic regions of the U.S. that occurred in three ethnic groups in 2003.In which geographic area did Hispanics account for their lowest percentage of cancer deaths in 2003?A. NortheastB. MidwestC. SouthD. WestQuestion 4 of 205.0/ 5.0 PointsWhich line chart below represents the data?A.B.C.D. None of the aboveQuestion 5 of 205.0/ 5.0 PointsFind the original data from the stem-and-leaf plot.A. 95, 91, 99, 101, 111, 115B. 91, 95, 91, 109, 119, 115C. 95, 99, 101, 101, 115, 115D. 95, 99, 101, 109, 115, 115Question 6 of 205.0/ 5.0 PointsIdentify the utility that accounts for over half the total bill in two months.A. WaterB. ElectricC. GasD. No single utility accounts for more than half the total bill in two monthsQuestion 7 of 205.0/ 5.0 PointsThe table shows the end–of–the–month checking account balance of a statistics teacher for the months January 1999 through December 1999 as determined by the closing balance on the last banking day of the month. The balance is rounded to the nearest dollar.A.B.C.D. None of the aboveQuestion 8 of 205.0/ 5.0 PointsThe stacked bar chart below shows the percentages of death due to cancer in four geographic regions of the U.S. that occurred in three ethnic groups in 2003.In which geographic area did Hispanics account for their highest percentage of cancer deaths in 2003?A. NortheastB. MidwestC. SouthD. WestQuestion 9 of 200.0/ 5.0 PointsThe histogram below shows the ages of the actors who won the Academy Award for best actor from 1970 to 2006.How many of the award winners were 50 years old or older at the time they won their Oscar?A. 6B. 9C. 15D. 18Question 10 of 205.0/ 5.0 PointsThe ages of employees of a company are summarized in the frequency table. Which line chart below represents the data?A.B.C.D.None of the aboveQuestion 11 of 200.0/ 5.0 PointsThe data below are the numbers of hours of homework done as reported by 24 high school juniors for the last week in September, 2006. 6, 5, 6, 4, 6, 6, 9, 7, 6, 3, 8, 5, 5, 8, 6, 5, 8, 6, 5, 7, 5, 8, 7, 4 Using bins of 2 hours width, which relative frequency histogram represents the data?A.B.C.D. None of the aboveQuestion 12 of 200.0/ 5.0 PointsThe stem-and-leaf plot below shows the weights in pounds of halibut caught on an Alaskan fishing boat for one day.How many values are there less than 40?A. 6B. 8C. 9D. 5Question 13 of 205.0/ 5.0 PointsIdentify the class that has had the greatest percentage increase with respect to its initial percentage over the five decades.A. FrB. SoC. JrD. SrQuestion 14 of 205.0/ 5.0 PointsThe stem–and–leaf diagram below shows the highest wind velocity ever recorded in 30 different U.S. cities. The velocities are given in miles per hour. The leaf unit is 1.0.How many of the maximum wind velocities are 88 miles per hour or lower?A. 2B. 5C. 11D. 18Question 15 of 200.0/ 5.0 PointsThe bar chart shows the relative frequencies of winners of the Wimbledon women’s singles tennis title for 1976 – 1995.How many titles did Graf and Navratilova win?A. .75B. 14C. 15D. 40Question 16 of 200.0/ 5.0 PointsA nurse measured the blood pressure of each person who visited her clinic. Following is a relative–frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40. Use the histogram to answer the question. The blood pressure readings were rounded down to the next whole number.Given that 600 people were aged between 25 and 40, approximately how many had a systolic blood pressure reading recorded as between 120 and 149 inclusive?A. 48%B. 250C. 288D. 300Question 17 of 200.0/ 5.0 PointsIdentify the class that had the lowest percentage increase in 2.5 or better GPA’s between the fourth and fifth decades.A. SrB. JrC. SoD. FrQuestion 18 of 205.0/ 5.0 PointsIdentify the utility that decreases as a percentage of the total utility bill from January to June.A. ElectricB. Natural GasC. WaterD. None decrease from January to June.Question 19 of 205.0/ 5.0 PointsThe following dot plot represents the ages of the people in a sample selected from a group of campaign volunteers.How many people were in the sample?A. 15B. 21C. 27D. 28Question 20 of 205.0/ 5.0 PointsThe following multiple line graph shows the numbers of death due to cancer in four geographic regions of the U.S. that occurred in three ethnic groups in 2003.In which geographic area was the number of cancer deaths among whites the highest in 2003?A. NortheastB. MidwestC. SouthD. Westashworth college MA260 online exam 2 latest 2015 decemberPart 1 of 1 – 0.0/ 100.0 PointsQuestion 1 of 200.0/ 5.0 PointsThe table shows the end–of–the–month checking account balance of a statistics teacher for the months January 1999 through December 1999 as determined by the closing balance on the last banking day of the month. The balance is rounded to the nearest dollar.A.B.C.D. None of the aboveQuestion 2 of 200.0/ 5.0 PointsAlan tossed a die 50 times and obtained the results shown in the dot plot below.How many times did he roll an even number?A. 17B. 19C. 25D. 21Question 3 of 200.0/ 5.0 PointsFind the original data from the stem-and-leaf plot.A. 95, 91, 99, 101, 111, 115B. 91, 95, 91, 109, 119, 115C. 95, 99, 101, 101, 115, 115D. 95, 99, 101, 109, 115, 115Question 4 of 200.0/ 5.0 PointsThe data below represent the results of a poll in which the following questions was asked: “To what degree are you satisfied with your current health insurance?” Which pie chart below represents the given data set?Very 14.5%Somewhat 26.3%Not at all 36.8%No opinion 22.4%A.B.C. Both represent the data.D. Neither represent the data.Question 5 of 200.0/ 5.0 PointsThe stacked bar chart below shows the percentages of death due to cancer in four geographic regions of the U.S. that occurred in three ethnic groups in 2003.In which geographic area did Hispanics account for their lowest percentage of cancer deaths in 2003?A. NortheastB. MidwestC. SouthD. WestQuestion 6 of 200.0/ 5.0 PointsThe stem-and-leaf plot below shows the weights in pounds of halibut caught on an Alaskan fishing boat for one day.How many values are there less than 40?A. 6B. 8C. 9D. 5Question 7 of 200.0/ 5.0 PointsIdentify the utility that has its smallest percentage of the total bill in March.A. GasB. ElectricC. WaterD. None of the utilities has its smallest percentage of the total bill in MarchQuestion 8 of 200.0/ 5.0 PointsA machine is supposed to fill juice bottles with 16 fluid ounces of juice. The manufacturer picks a sample of bottles that have been filled by the machine and determines the volume of juice in each bottle. The results are shown in the following stem–and–leaf diagram. The leaf unit is 0.1.How many bottles were sampled?A. 9B. 10C. 15D. 44Question 9 of 200.0/ 5.0 PointsThe stacked bar chart below shows the percentages of death due to cancer in four geographic regions of the U.S. that occurred in three ethnic groups in 2003.In which geographic area did Hispanics account for their highest percentage of cancer deaths in 2003?A. NortheastB. MidwestC. SouthD. WestQuestion 10 of 200.0/ 5.0 PointsWhich line chart below represents the data in the table?A.B.C.D. None of the aboveQuestion 11 of 200.0/ 5.0 PointsWhich line chart below represents the data?A.B.C.D. None of the aboveQuestion 12 of 200.0/ 5.0 PointsThe following dot plot represents the ages of the people in a sample selected from a group of campaign volunteers.How many people were in the sample?A. 15B. 21C. 27D. 28Question 13 of 200.0/ 5.0 PointsThe following multiple line graph shows the numbers of death due to cancer in four geographic regions of the U.S. that occurred in three ethnic groups in 2003.In which geographic area was the number of cancer deaths among whites the highest in 2003?A. NortheastB. MidwestC. SouthD. WestQuestion 14 of 200.0/ 5.0 PointsIdentify the utility that decreases as a percentage of the total utility bill from January to June.A. ElectricB. Natural GasC. WaterD. None decrease from January to June.Question 15 of 200.0/ 5.0 PointsIdentify the class that had the lowest percentage increase in 2.5 or better GPA’s between the fourth and fifth decades.A. SrB. JrC. SoD. FrQuestion 16 of 200.0/ 5.0 PointsIdentify the class that has had the greatest percentage increase with respect to its initial percentage over the five decades.A. FrB. SoC. JrD. SrQuestion 17 of 200.0/ 5.0 PointsA machine is supposed to fill juice bottles with 16 fluid ounces of juice. The manufacturer picks a sample of bottles that have been filled by the machine and determines the volume of juice in each bottle. The results are shown in the stem–and–leaf diagram below. The leaf unit is 0.1.How many bottles had exactly 16 fluid ounces (to the nearest 0.1 ounce)?A. 0B. 6C. 11D. 25Question 18 of 200.0/ 5.0 PointsThe time series line chart below shows the prices of a volatile stock from January 1999 to December 1999. Between which two consecutive months did the price of the stock drop by the greatest percentage?A. June – JulyB. August – SeptemberC. May – JuneD. None of the aboveQuestion 19 of 200.0/ 5.0 PointsThe data below are the numbers of hours of homework done as reported by 24 high school juniors for the last week in September, 2006. 6, 5, 6, 4, 6, 6, 9, 7, 6, 3, 8, 5, 5, 8, 6, 5, 8, 6, 5, 7, 5, 8, 7, 4 Using bins of 2 hours width, which relative frequency histogram represents the data?A.B.C.D. None of the aboveQuestion 20 of 200.0/ 5.0 PointsA nurse measured the blood pressure of each person who visited her clinic. Following is a relative–frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40. Use the histogram to answer the question. The blood pressure readings were rounded down to the next whole number.Given that 600 people were aged between 25 and 40, approximately how many had a systolic blood pressure reading recorded as between 120 and 149 inclusive?A. 48%B. 250C. 288D. 300ashworth college MA260 online exam 3 latest 2015 decemberPart 1 of 1 – 85.0/ 100.0 PointsQuestion 1 of 200.0/ 5.0 PointsThe batting averages of the first three batters in the Eureka College women’s softball team lineup are .310, .301, and .277. If the first three batters are considered as the “lead-off group”, what is the batting average of the group?A. .301B. .296C. There is insufficient information to answer the questionD. None of the aboveQuestion 2 of 205.0/ 5.0 PointsFind the mode(s) for the given sample data.66, 25, 66, 13, 25, 29, 56, 66A. 25B. 56C. 25 & 66D. 66Question 3 of 205.0/ 5.0 PointsUse the range rule of thumb to approximate the standard deviation.496,598, 503, 528, 565, 601, 576, 543A. 170.2B. 60.6C. 26.25D. 18.75Question 4 of 205.0/ 5.0 PointsThe mathematics SAT scores of the seven students in a mathematics seminar are 533, 553, 578, 586, 619, 626, and 633. Suppose that the student with the score 533 drops the seminar and is replaced by a student with a score of 585. What will happen to the mean and the median scores of the class?A. Neither the mean nor the median will change.B. Both the median and the mean will increase.C. The median will increase; the mean will be unchanged.D. The mean will increase; the median will be unchanged.Question 5 of 205.0/ 5.0 PointsAl and Joe are two county sheriff’s deputies assigned to watch for traffic violations. Their arrest and conviction records for May and June are shown below.Who had the best conviction percentage in June?A. AlB. JoeC. They are equalD. Cannot tell by the data availableQuestion 6 of 200.0/ 5.0 PointsA softball player has a batting average of exactly .300 and no more than60 times at bat. Suppose this player gets 5 hits in her next 6 times atbat. What is the highest possible average she could now have?A. .500B. .833C. .348D. There is insufficient information to answer the questionQuestion 7 of 205.0/ 5.0 PointsThe students in Hugh Logan’s math class took the Scholastic Aptitude Test. Their math scores are shown below. Find the mean score.552 593358 352 537349 357 596 470 482A. 446.8B. 474.6C. 462.8D. 464.6Question 8 of 205.0/ 5.0 PointsThe number of vehicles passing through a pharmacy drive-up line with two windows during each 15-minute period was recorded. The results are shown below. Find the median number of vehicles going through the line in a fifteen-minute period.16 8 24 22 30 19 18 27 11 1517 24 26 23 7 25 21 16 20 14A. 19.3B. 20.1C. 19.5D. 19.6Question 9 of 205.0/ 5.0 PointsThe following data set is the GPAs of the students in a statistics class.1.93, 1.99, 2.00, 2.04, 2.12, 2.34, 2.55, 2.55, 2.75, 2.75,2.80, 2.80, 2.85, 3.02, 3.12, 3.22, 3.31, 3.33, 3.45, 3.69What percentile is a GPA of 2.34?A. About the 6thB. About the 15thC. About the 30thD. About the 60thQuestion 10 of 205.0/ 5.0 PointsSuppose that your income is at the 81st percentile of wage earners in the United States. What percent of wage earners make more than you do?A. 19%B. 81%C. Cannot be calculated from the information givenD. None of the aboveQuestion 11 of 205.0/ 5.0 PointsThe grocery expenses for six families were $80.86, $47.74, $57.92, $81.08, $75.18, and $88.08. Compute the mean grocery bill. Round your answer to the nearest cent.A. $71. 82B. $73.79C. $72.81D. $71.81Question 12 of 205.0/ 5.0 PointsThe mathematics SAT scores of the seven students in a mathematics seminar are 538, 550, 570, 593, 610, 622, and 634. Suppose the student with the score 634 drops the seminar and is replaced by a student with a score of 600. What will happen to the mean and the median scores of the class?A. Neither mean nor median will change.B. The median will decrease, the mean will not change.C. The median will not change, the mean will decrease.D. Both mean and median will decrease.Question 13 of 205.0/ 5.0 PointsFind the mode(s) for the given sample data. 20, 49, 46, 43, 49, 43, 49, 20, 22A. 43B. 49C. 20D. 22Question 14 of 205.0/ 5.0 PointsAl and Joe are two county sheriff’s deputies assigned to watch for traffic violations. Their arrest and conviction records for May and June are shown below.Who had the best conviction percentage in May?A. AlB. JoeC. They are equalD. Can not tell by the data availableQuestion 15 of 205.0/ 5.0 PointsThe mathematics SAT scores of the seven students in a mathematics seminar are 533, 553, 578, 586, 619, 626, and 633. Suppose that the student with the score 533 drops the seminar and is replaced by a student with a score of 765. What will happen to the mean and the median scores of the class?A. The mean will increase; the median will be unchanged.B. The median will increase; the mean will be unchanged.C. Neither the mean nor the median will change.D. Both the median and the mean will increase.Question 16 of 205.0/ 5.0 PointsFind the mode(s) for the given sample data. 7.29, 7.41, 7.56, 7.29, 7.88, 7.99, 7.62A. 7.56B. 7.29C. 7.577D. 7.41Question 17 of 200.0/ 5.0 PointsConsider the distribution of heights of all the players in the National Basketball Association. What would you expect the shape of the distribution to be?A. Skewed rightB. Skewed leftC. SymmetricD. Multi-peakedQuestion 18 of 205.0/ 5.0 PointsFind the standard deviation for the given data. Round your answer to one more decimal place than the original data.22, 29, 21, 24, 27, 28, 25, 36A. 4.8B. 4.2C. 2.8D. 1.6Question 19 of 205.0/ 5.0 PointsLast year, a road construction firm hired 11 new employees. Their ages at hiring are listed below. Find the mean hiring age to one decimal place.23 19 30 33 27 31 58 22 21 26 29A. 29.1B. 28.0C. 29.2D. 29.0Question 20 of 205.0/ 5.0 PointsThe normal monthly precipitation (in inches) for August is listed for 20 different U.S. cities. Find the median of the data.A. 2.79 in.B. 3.45 in.C. 3.35 in.D. 2.45 in.ashworth college MA260 online exam 4 latest 2015 decemberPart 1 of 1 – 80.0/ 100.0 PointsQuestion 1 of 200.0/ 5.0 PointsThe scores on a certain test are normally distributed with a mean score of 58 and a standard deviation of 4. What is the likelihood that a sample of 90 students will have a mean score of at least 58.4216?A. 0.8413B. 0.3413C. 0.3174D. 0.1587Question 2 of 205.0/ 5.0 PointsWhich of the following statements concerning areas under the standard normal curve is/are true?a) If a z-score is negative, the area to its right is greater than 0.5.b) If the area to the right of a z-score is less than 0.5, the z-score is negative.c) If a z-score is positive, the area to its left is less than 0.5.A. a, cB. b, cC. a, bD. aQuestion 3 of 205.0/ 5.0 PointsThe amount of Jen’s monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $10. Find the 25th percentile.A. About $46.30B. About $43.30C. About $43.40D. about $43.20Question 4 of 205.0/ 5.0 PointsAt one college, GPA’s are normally distributed with a mean of 2.9 and a standard deviation of 0.6. Find the 70th percentile.A. 3.53B. 3.42C. 3.23D. 3.13Question 5 of 200.0/ 5.0 PointsIf light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, approximately what percentage of light bulbs has a life of more than 3000 hours?A. About 84%B. About 68%C. About 32%D. About 16%Question 6 of 205.0/ 5.0 PointsThe volumes of soda in quart soda bottles are normally distributed with a mean of 32.3 oz and a standard deviation of 1.2 oz. What is the probability that the volume of soda in a randomly selected bottle will be less than 32 oz?A. 0.5012B. 0.5010C. 0.4015D. 0.4013Question 7 of 205.0/ 5.0 PointsDecide which of the described variables is/are likely to have a normal or near-normal distribution.a) The heights of corn stalks in one row of corn that is half