Unit Test Answers

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An employer wants to determine the amount of job satisfaction experienced by his employees. Employees are assigned to one of four pay scales. Each employee from the top two pay scales are chosen for the sample. Select the statement that best describes the result of the undercoverage bias.

A
There is no undercoverage bias.
B
The undercoverage bias will likely overestimate the inferred job satisfaction for the population.
C
The undercoverage bias will likely underestimate the inferred job satisfaction for the population.
D
The undercoverage bias will likely reflect the inferred job satisfaction correctly for the population.
3

A university wants to survey students to gather opinions regarding a tuition increase for their online degree programs. Which survey method is most likely to lead to nonresponse bias in the sample?

A
Station interviewers at high-traffic areas near the student center to administer the survey to students trying to get to class.
B
Email all university students asking them to complete an online survey.
C
Ask all professors to include the completion of a survey as a course assignment.
D
Mail a survey to the home address of all university students asking them to complete and return the survey for a chance to win a sweepstakes prize.
4

A restaurant wants to determine how much their customers like the dinner specials prepared by the new restaurant chef. A survey is administered by the waitstaff prior to the customer leaving the restaurant. Select the statement that best describes the probable result of the response bias.

A
There is no response bias.
B
The response bias will likely underestimate the likeability of the chef-prepared dinner specials.
C
The response bias will likely overestimate the likeability of the chef-prepared dinner specials.
D
The response bias will likely reflect the correct likeability of the chef-prepared dinner specials.

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