Exam 10: Sample Surveys

The online MBA director at a large business school surveys a sample of current students to Determine their level of satisfaction with the program.She finds that 67% are "very Satisfied" with the online program.This is a

A basketball player has a 70% free throw percentage.Which plan could be used to simulate The number of free throws she will make in her next five free throw attempts? I.Let 0,1 represent making the first shot, 2, 3 represent making the second shot,…, 8, 9 Represent making the fifth shot.Generate five random numbers 0-9, ignoring repeats. II.Let 0, 1, 2 represent missing a shot and 3, 4,…, 9 represent making a shot.Generate five Random numbers 0-9 and count how many numbers are in 3-9. III.Let 0, 1, 2 represent missing a shot and 3, 4,…, 9 represent making a shot.Generate five Random numbers 0-9 and count how many numbers are in 3-9, ignoring repeats.

Management at a retail store is concerned about the possibility of drug abuse by people who work there.They decide to check on the extent of the problem by having a random sample of the employees undergo a drug test.Several plans for choosing the sample are proposed. Name the sampling strategy in each. a. Randomly select an employee classification and test all the people who work in that classification - supervisors, fulltime clerks, part-time clerks, and maintenance staff. ________ b. Choose the fourth person that arrives to work for each shift. _________ c. There are four employee classifications: supervisors, fulltime clerks, part-time clerks, and maintenance staff. Randomly select ten people from each category. ________________ d. Each employee has a three-digit identification number. Randomly choose 40 numbers. _____________

A school district administrator sent a survey to all teachers in the district.Only 30% of the Teachers responded to the survey.Which of the following is true? I.The people that did not responded are likely to be similar to those that did so he should use them as the sample. II.This survey design suffered from non-response bias. III.Because he sent the survey to everyone, this is a census and the results can be applied to The whole population.

A consumer research group is interested in how older drivers view hybrid cars.Specifically, They wish to assess the percentage of drivers in the U.S.50 years of age or older who intend To purchase a hybrid in the next two years.They selected a systematic sample from a list of AARP (American Association of Retired Persons) members.Based on this sample, they Estimated the percentage to be 17%.The sampling frame for this study is

A consumer research group is interested in how older drivers view hybrid cars.Specifically, They wish to assess the percentage of drivers in the U.S.50 years of age or older who intend to purchase a hybrid in the next two years.They selected a systematic sample from a list of AARP (American Association of Retired Persons) members.Based on this sample, they Estimated the percentage to be 17%.Which of the following statements about this study is True?

Molly's Reach, a regional restaurant and gift shop, has recently launched an increased salescampaign, particularly focused on their gift shop.To determine if their proposal is of interest, They plan to survey a random sample of their regular customers.One member of the management team at Molly's Reach suggests that their survey could be conducted online. Customers logging on to the online store would be asked to take a few minutes to completethe survey and would be offered a coupon as incentive to participate .Which of the following Statements is true?

Listed below are the names of 20 students who are juniors.Use the random numbers listed below to select five of them to be in your sample.Clearly explain your method. Adam Chris Dave Deirdre Dick Ellen Eric Joan John Judi Joy Kenny Laura Mary Paul Peter Rachel Rob Sara Stacey 04028552598118340754602090676527306 28370826698323677479906184370778695