Exam 6: Sampling: Theory and Methods

A voters list is an example of a sampling frame.

If the estimated population proportion is .30 based on previous studies, and the acceptable error is plus or minus 5 percent, and the z-value for a 95 percent level of confidence is 1.96, the needed sample size is approximately:

In order to determine the proportion of people who favor imposing sales tax for all Internet purchases, the minimum sample size needed for a precision level of 5 percent and a confidence level of 95 percent, is:

Discuss the advantages of quota sampling.

Which method of sampling relies on the assumption that rare groups of people tend to form their own unique social circles?

Before polling students in the School of Business, the researcher divides all the current students into groups based on their class standing (freshman, sophomores, etc). Then, she randomly draws a sample of 50 students from each of these groups to create a representative sample of the entire student body in the School. The researcher is practicing which of the following sampling methods?

An instructor teaching an introductory course in marketing has 300 students enrolled in her class. Some students in the class request the instructor to cancel her class on Wednesday before Thanksgiving. She agrees to do so if 70 percent of the students agreed with the proposal to cancel the class. Instead of asking every student to participate in the poll, she asks students to write their names on index cards and put them in a collection basket. She then asks a student to pull out 30 cards from the basket without looking at the basket or the cards. The instructor is practicing what kind of sampling technique?

Which of the following statements about cluster sampling is true?

Which of the following statements is true about sample size formula for nonprobability samples?

Toyota Corporation is interested in determining the satisfaction of Lexus users. Instead of sampling the entire population of car owners, Toyota samples those who owned a Lexus. Toyota is drawing its sample from a: