When conducting a survey, it is important to use arandomsample:

so that we can make causal conclusions.

to ensure truthful answers to the survey's questions.

to get a significant result.

to avoid bias and to get a representative sample.

none of the above.

Question 2 of 7Points: 10

In order to obtain a sample of undergraduate students in the United States, a simple random sample of 10 states is selected. From each of the selected states, 10 colleges or universities are chosen at random. Finally, from each of these 100 colleges or universities, a simple random sample of 20 undergraduate students is selected. Thus, the final sample consists of 2,000 undergraduates.

This is an example of:

simple random sampling.

stratified sampling.

multistage sampling.

convenience sampling.

none of the above.

The next three questions refer to the information about the city council survey.

Question 3 of 7Points: 10

The city council for a large city wanted to know what proportion of the residents thought fitness classes should be available to everyone. The research department offered to cooperate in conducting a survey, and a simple random sample of 500 voters was selected from all the registered voters in the city. A survey form was sent by mail to these 500 voters.

In this case, the population of interest is:

the residents who responded to the mail survey.

all the residents who think that fitness classes should be available to everyone.

all the residents of the city.

all the residents on the list of registered voters.

the 500 residents who got the mail survey.

Question 4 of 7Points: 10

In this case, the sampling frame is:

the residents who responded to the mail survey.

all the residents who think that fitness classes should be available to everyone.

all the residents of the city.

all the residents on the list of registered voters.

the 500 residents who got the mail survey.

Question 5 of 7Points: 10

Which of the following is true about this study?

Since the sample is random, it is representative of the population of interest.

Even though the sample is random, it is not representative of the population of interest.

Question 6 of 7Points: 10

Ross Times, the student newspaper of Ross College, printed a "What do you think?" column feature asking: "Do you think that the college is doing enough to provide student parking?" The newspaper's editor randomly selected from the registrars list of students and then gathered their opinions. In all, 126 responses were collected.

This is an example of:

a voluntary response sample.

a multistage sample.

a simple random sample.

a convenience sample.

a cluster sample.

Question 7 of 7Points: 10

Which of the following is an example of stratified sampling?

A sample of 150 people called the campus radio show to express their opinions about the food establishment on campus.

In order to assess student satisfaction with the food establishment on campus, 100 students from each of the schools on campus were randomly selected (100 business, 100 fine arts, 100 humanities, 100 sciences, and 100 technology) for a total of 500 sampled students.

In order for a city to find out if drivers text while driving, 15 blocks within the city were randomly selected and all the residents on those blocks were interviewed.

A health educator wanted to study the sleeping habits of the undergraduate students in her university. For her study, the researcher chose a simple random sample of 600 students to interview.

The human resources department of a large bank wanted to assess the job satisfaction of the bank's workers. The department interviewed 50 workers in the breakroom during a week of morning breaks.