Question

select the correct answer. the designers of a standardized test are interested in knowing how long people take, on average, to complete the writing portion of the test. they decide to conduct an observation study at a testing facility. to avoid bias in their study, they create a list of the test takers scheduled to take the test this week. then, they randomly select 50 test takers from the list to be part of the study. in this situation, what does the list of test takers represent? a. a sample b. a control group c. the population d. the frame

Explanation:

A frame is a list of all the elements in the population from which a sample is drawn. Here, the list of test - takers scheduled to take the test this week is used to randomly select the sample of 50 test - takers. A sample is the subset (50 test - takers) actually selected. A control group is used in experimental studies for comparison. The population is all possible test - takers, not just those scheduled this week.

Answer:

D. the frame