Statistics: Concepts and Controversies 10th Edition by David S. Moore Test bank

 
22. A(n) _____________ is the entire collection of subjects about which we would like information.
 a. census
 b. sample
 c. individual
 d. population
 
ANSWER:  d
 
23. A(n) _____________ is a single subject or object to be measured or studied.
 a. census
 b. sample
 c. individual
 d. population
 
ANSWER:  c
 
The administration of Virginia Commonwealth University (VCU) has been asked to extend the Drop/Add Period to two weeks (instead of the current one-week period). VCU will do so if it is convinced that more than half of the student body is in favor of this change. Of the 1500 students surveyed, 803 are in favor of extending the Drop/Add Period as proposed.
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24. The study is a(n)
 a. experiment.
 b. sample survey.
 c. census.
 d. population.
 
ANSWER:  b
 
25. The population for this study is
 a. 1500 VCU students.
 b. all VCU students.
 c. more than half of VCU students.
 d. the VCU administration.
 
ANSWER:  b
 
26. The response variable for this study is
 a. 1500 VCU students.
 b. 803 VCU students.
 c. number of classes surveyed.
 d. opinion toward proposed change.
 
ANSWER:  d
 
In the weeks immediately following Supreme Court Associate Justice Antonin Scalia's death, much focus was on the conflict between President Obama's suggestion that he must fill the position and the Republican-led Senate Judiciary Committee's resistance to his doing so. At this time, a Pew Research Poll of 1002 adults found that a majority of Americans (56 percent) said that the Senate should hold hearings and vote on President Obama's choice to fill the vacancy.
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27. This study is a(n)
 a. observational study.
 b. experiment.
 c. sample survey.
 d. population.
 
ANSWER:  c
 
28. The population for this study is
 a. all people.
 b. all American adults.
 c. all senators.
 d. 1002 adults.
 
ANSWER:  b
 
29. The sample for this study is
 a. all people.
 b. all American adults.
 c. all senators.
 d. 1002 adults.
 
ANSWER:  d
 
30. The response variable for this study is
 a. political affiliation.
 b. opinion about Senate obligation to hold confirmation hearings.
 c. 560 adults.
 d. 1002 adults.
 
ANSWER:  b
 
Americans Rank Occupations by Level Ethical Standards:
A recent Gallup Poll asked 4045 randomly chosen American adults to rate the ethical standards of 45 occupations. Nurses were at the top, with 73% of the poll respondents rating them very high.
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31. This study is a(n)
 a. observational study.
 b. experiment.
 c. sample survey.
 d. population.
 
ANSWER:  c
 
32. The population for this study is
 a. all people.
 b. all American adults.
 c. all nurses.
 d. 4045 American adults.
 
ANSWER:  b
 
33. The sample for this study is
 a. all people.
 b. all American adults.
 c. all nurses.
 d. 4045 American adults.
 
ANSWER:  d
 
34. The response variable for this study is
 a. 45 occupations.
 b. ethical standards rating.
 c. Gallup Poll.
 d. 4045 American adults.
 
ANSWER:  b
 
Due to the rising costs of accidents, many employers have started requiring employees to take courses designed to heighten safety awareness. One company is trying to decide which one of two courses to implement. To help make a decision, ten employees selected at random take Course A, and another ten randomly selected employees take Course B. Each employee then takes the same safety test that is graded out of a possible 50 points. Based on the safety test scores, the company concluded that neither course was significantly better at heightening safety awareness.
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35. This study is a(n)