Question

Identify the type of sampling method used: AT&T selects every 40th iPod for testing and evaluation of performance.

a. simple random sample
b. cluster sample
c. convenience
d. systematic

Answer 1

AT&T uses systematic sampling method by selecting every 40th iPod for testing and evaluation of performance.

Step-by-step explanation:

The type of sampling method used in this scenario is systematic sampling. AT&T selects every 40th iPod for testing and evaluation of performance. In systematic sampling, the researcher selects every kth individual from the population to create a sample. In this case, every 40th iPod is selected.