Statistics: Concepts and Controversies 10th Edition by David S. Moore Test bank
Multiple Choice
1. A psychologist wants to know if adults with normal vision can be fooled by a certain optical illusion. She recruits 50 students from her PSY 120 class and finds that 42 of them are fooled by the illusion. The population in this study is
a. the 42 students who were fooled.
b. the 50 students who served as subjects.
c. all students in the PSY 120 class.
d. all adults with normal vision.
ANSWER: d
2. When we take a census, we attempt to collect data from
a. a stratified random sample.
b. every individual selected in a simple random sample.
c. every individual in the population.
d. a voluntary response sample.
e. a convenience sample.
ANSWER: c
3. A 2016 national sample survey interviewed 1012 people aged 18 and older, nationwide, by telephone. One question asked was, "We'd like you to imagine a ladder with steps numbered from zero at the bottom to ten at the top. Suppose the top of the ladder represents the best possible situation for our country and the bottom represents the worst possible situation. Please tell me the number of the step on which you think the United States stands at the present time." The population for this sample survey appears to be
a. the 1012 people who were interviewed.
b. all registered voters.
c. all adult residents of the United States.
d. people who think the United States is at the best possible situation.
e. all U.S. citizens.
ANSWER: c
You want to know the opinions of American school teachers about establishing a national test for high school graduation. You obtain a list of the members of the National Education Association (the largest teachers union) and mail a questionnaire to 2500 teachers chosen at random from this list. In all, 1347 teachers return the questionnaire.
4. In this situation, the population is
a. the 1347 teachers who mail back the questionnaire.
b. the 2500 teachers to whom you mailed the questionnaire.
c. all members of the National Education Association.
d. all American school teachers.
e. all American school students.
ANSWER: d
5. The sample is
a. the 1347 teachers who mail back the questionnaire.
b. the 2500 teachers to whom you mailed the questionnaire.
c. all members of the National Education Association.
d. all American school teachers.
e. all American school students.
ANSWER: a
6. You measure the age (years), weight (pounds), and marital status (single, married, divorced, or widowed) of 1400 women. How many variables did you measure?
a. 1400
b. One
c. Two
d. Three
e. 1403
ANSWER: d
7. In a(n) _____________, the environments of the subjects are controlled or manipulated by the researcher.
a. census
b. experiment
c. observational study
d. sample survey
ANSWER: b
8. A Pew Research Council Poll recently showed that 23 percent of Americans are religiously unaffiliated. The poll contacted 35,071 adults by telephone. The margin of sampling error was plus or minus 0.6 (six-tenths) of a percentage point. Assume a 95 percent confidence level and no bias. The population for this sample survey is
a. all adult residents of the United States.
b. the 35,071 people who answered the question.
c. all households in the United States.
d. the 23 percent who said that they were religiously unaffiliated.
ANSWER: a
The General Social Survey (GSS), conducted by the National Opinion Research Center at the University of Chicago, is a major source of data on social attitudes in the United States. Once each year, 1500 adults are interviewed in their homes all across the country. The subjects are asked their opinions about sex and marriage, attitudes toward women, welfare, foreign policy, and many other issues.
9. The GSS is an example of
a. anecdotal information.
b. using available data.
c. a sample survey.
d. an experiment.
ANSWER: c
10. The questions on the GSS are considered
a. samples.
1. A psychologist wants to know if adults with normal vision can be fooled by a certain optical illusion. She recruits 50 students from her PSY 120 class and finds that 42 of them are fooled by the illusion. The population in this study is
a. the 42 students who were fooled.
b. the 50 students who served as subjects.
c. all students in the PSY 120 class.
d. all adults with normal vision.
ANSWER: d
2. When we take a census, we attempt to collect data from
a. a stratified random sample.
b. every individual selected in a simple random sample.
c. every individual in the population.
d. a voluntary response sample.
e. a convenience sample.
ANSWER: c
3. A 2016 national sample survey interviewed 1012 people aged 18 and older, nationwide, by telephone. One question asked was, "We'd like you to imagine a ladder with steps numbered from zero at the bottom to ten at the top. Suppose the top of the ladder represents the best possible situation for our country and the bottom represents the worst possible situation. Please tell me the number of the step on which you think the United States stands at the present time." The population for this sample survey appears to be
a. the 1012 people who were interviewed.
b. all registered voters.
c. all adult residents of the United States.
d. people who think the United States is at the best possible situation.
e. all U.S. citizens.
ANSWER: c
You want to know the opinions of American school teachers about establishing a national test for high school graduation. You obtain a list of the members of the National Education Association (the largest teachers union) and mail a questionnaire to 2500 teachers chosen at random from this list. In all, 1347 teachers return the questionnaire.
4. In this situation, the population is
a. the 1347 teachers who mail back the questionnaire.
b. the 2500 teachers to whom you mailed the questionnaire.
c. all members of the National Education Association.
d. all American school teachers.
e. all American school students.
ANSWER: d
5. The sample is
a. the 1347 teachers who mail back the questionnaire.
b. the 2500 teachers to whom you mailed the questionnaire.
c. all members of the National Education Association.
d. all American school teachers.
e. all American school students.
ANSWER: a
6. You measure the age (years), weight (pounds), and marital status (single, married, divorced, or widowed) of 1400 women. How many variables did you measure?
a. 1400
b. One
c. Two
d. Three
e. 1403
ANSWER: d
7. In a(n) _____________, the environments of the subjects are controlled or manipulated by the researcher.
a. census
b. experiment
c. observational study
d. sample survey
ANSWER: b
8. A Pew Research Council Poll recently showed that 23 percent of Americans are religiously unaffiliated. The poll contacted 35,071 adults by telephone. The margin of sampling error was plus or minus 0.6 (six-tenths) of a percentage point. Assume a 95 percent confidence level and no bias. The population for this sample survey is
a. all adult residents of the United States.
b. the 35,071 people who answered the question.
c. all households in the United States.
d. the 23 percent who said that they were religiously unaffiliated.
ANSWER: a
The General Social Survey (GSS), conducted by the National Opinion Research Center at the University of Chicago, is a major source of data on social attitudes in the United States. Once each year, 1500 adults are interviewed in their homes all across the country. The subjects are asked their opinions about sex and marriage, attitudes toward women, welfare, foreign policy, and many other issues.
9. The GSS is an example of
a. anecdotal information.
b. using available data.
c. a sample survey.
d. an experiment.
ANSWER: c
10. The questions on the GSS are considered
a. samples.