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Exam 8: Surveys and Sampling

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Question 21

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From July to September, 2013, the Pew Research Center for the People & the Press carried out a national survey to determine use of social networking by African American Internet users. It found that 73% used a social networking of some kind. This is a

A) statistic.
B) parameter.
C) target population.
D) sampling frame.
E) census.

F) B) and D)
G) All of the above

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Question 22

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Suppose the administration decides to do the following. At a Starbucks located on campus, every tenth person who enters on a Monday morning is selected to be surveyed. Explain why this may be biased.

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Depending on the time during which indiv...

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Question 23

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Management at a large multinational corporation would like to survey its employees about the level of interest in combining flexible work schedules with telecommuting from Home. Which of the following is the parameter of interest in this study?

Suppose that a local government agency is interested in gauging public opinion about natural gas drilling in northeastern Pennsylvania by surveying residents who live near a Proposed drilling site. Which of the following questions is leading?

Molly's Reach, a regional restaurant and gift shop, has recently launched an increased sales campaign, 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. Suppose that Molly's Reach's regular customers belong to a rewards program and have a customer Rewards ID number. Molly's Reach decides to randomly select 100 numbers. This Sampling plan is called

Two of the questions asked in the survey of employees are shown below. • Since exercise is so important to good health, would you be willing to participate in organized walks during lunch hour? • Would you attend a "healthy cooking" demonstration? A. Are these questions valid (appropriately worded)? Explain. b. Which question is more neutral? Explain.

Molly's Reach, a regional restaurant and gift shop, has recently launched an increased sales campaign, 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. Suppose that Molly's Reach has an alphabetized list of regular customers who belong to their rewards Program. After randomly selecting a customer on the list, every 25th customer from that Point on is chosen to be in the sample. This sampling plan is called

Which of the following survey questions is leading?

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 used a list of AARP (American Association of Retired Persons) members as the sampling frame. Based on a systematic sample, they estimated the percentage to be 17%. A. Define the target population. b. Define the parameter. c. What is the statistic? d. How might the results be biased?

Two of the questions asked in the survey of customers are shown below. • Given the prevalence of identity theft, are you reluctant to provide credit card information online to purchase items from the gift shop? • Are you confident that any information you provide to our online store is secure? A. Are these questions valid (appropriately worded)? Explain. b. Which question is more neutral? Explain.