Exam 3: Surveys and Sampling

Identify population, sample, sampling frame and parameter. -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

Identify bias. -A women's advocacy group believes that there is gender discrimination in the Financial services industry. One member of the group, a financial analyst, offers to Survey a sample of women at her company about this issue. Which of the following Statements is true about the proposed study?

Find conditional and marginal distributions. -In the ASW study described above, a. Define the target population. b. Define the parameter. c. What is the sampling frame? d. How might the results be biased?

Find conditional and marginal distributions. -ASW, a regional shoe chain, has recently launched an online store. Sales via the Internet have been sluggish compared to their brick and mortar stores, and management suspects that its regular customers have concerns regarding the security of online transactions. To determine if this is the case, they plan to survey a random sample of their regular customers. Under consideration are several plans for selecting the sample. Name the sampling strategy for each. a. Regular customers belong to a rewards program and have a customer rewards ID number. Randomly select 100 numbers. b. ASW has stores in five different cities in the northeastern U.S. Randomly select one of the stores and survey all regular customers that belong to its rewards program. c. ASW 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. d. Customers are grouped into four age categories (under 21, 21 to 35, 36 to 50, and over 50). Randomly select 10 regular customers in each age category.

Find conditional and marginal distributions. -One member of the management team at ASW suggests that their survey could be conducted online. Customers logging on to the online store would be asked to take a few minutes to complete the survey and would be offered a coupon as incentive to participate. Explain how this approach might be biased.

Analyze the sampling method. -The administration of a large university is interested in learning about the types of Wellness programs that would interest its employees. Suppose that there are five Categories of employees (administration, faculty, professional staff, clerical and Maintenance) and the university decides to randomly select ten individuals from each Category. This sampling plan is called

Identify population, sample, sampling frame and parameter. -In May, 2010, the Pew Research Center for the People & the Press carried out a National survey to gauge opinion on the Arizona Immigration Law. It found that 59% Approved of the new law. This is a

Identify bias. -During the BP Gulf oil crisis in the summer of 2010, a local television news program Routinely asked viewers to call in with their opinion about proposed solutions to the Problem. These results were likely biased because

Find conditional and marginal distributions. -The administration of a large university is interested in learning about the types of wellness programs that would interest its employees. To do this, they plan to survey a random sample of employees. Under consideration are several plans for selecting the sample. Name the sampling strategy for each.

Identify population, sample, sampling frame and parameter. -ASW, a regional shoe chain, has recently launched an online store. Sales via the Internet have been sluggish compared to their brick and mortar stores, and management Wants to survey its regular customers about potential concerns regarding the security of Online transactions. All regular ASW customers is known as the ________ of the study.

Analyze the sampling method. -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. Each employee has an ID number, and the administration plans to randomly select 250 numbers. This sampling plan is called

Analyze the sampling method. -The HR department of a large company wants to determine how often to bring Representatives from the financial firm managing employee pensions on site to meet with Individuals about their retirement plans. In order to determine level of interest, they Decide to survey employees. Suppose they select one department (e.g., Sales) and survey All employees within that department. This sampling plan is called

Analyze the sampling method. -ASW, a regional shoe chain, has recently launched an online store. Sales via the Internet have been sluggish compared to their brick and mortar stores, and management Wants to survey its regular customers about potential concerns regarding the security of Online transactions. Suppose that ASW 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

Analyze the sampling method. -The administration of a large university is interested in learning about the types of Wellness programs that would interest its employees. Suppose that the university Randomly selects a school (e.g., the Business School) and surveys all of the individuals (administration, faculty, professional staff, clerical and maintenance) who work in that School. This sampling plan is called

Find conditional and marginal distributions. -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? • Are you confident that any information you provide online is secure? a. Are these questions valid (appropriately worded)? Explain. b. Which question is more neutral? Explain.

Identify population, sample, sampling frame and parameter. -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?

Analyze the sampling method. -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. The HR Department has an alphabetized list of newly hired employees (hired Within the last year). After starting the process by randomly selecting an employee from The list, then every 5th name is chosen to be included in the sample. This sampling plan is Called

Identify bias. -Which of the following survey questions is leading?

Analyze the sampling method. -ASW, a regional shoe chain, has recently launched an online store. Sales via the Internet have been sluggish compared to their brick and mortar stores, and management Wants to survey its regular customers about potential concerns regarding the security of Online transactions. Suppose that ASW's regular customers belong to a rewards program And have a customer rewards ID number. ASW decides to randomly select 100 numbers. This sampling plan is called

Identify population, sample, sampling frame and parameter. -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?