THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
An auditor,examining a total of 650 accounts receivable by a corporation,selected a random sample of 45 accounts.The sample mean is $108.34 and the sample standard deviation is $30.85.
-A director of marketing research needs a sample of households to participate in the testing of a new toothpaste package.She directs five members of her staff to find five households each.This is an example of:

A) cluster sampling.
B) stratified sampling.
C) quota sampling.
D) systematic sampling.