The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a videocassette recorder over the past 12 months are satisfied with their products.If there are 4 different brands of videocassette recorders made by the company,the best sampling strategy would be to use a:
A)simple random sample.
B)stratified random sample.
C)cluster sample.
D)self-selected sample.

Question

Quizplus · Accepted Answer

With four different brands of videocassette recorders, using a simple random sample or a cluster sample may not adequately represent the opinions of each brand's customers. A stratified random sample would involve dividing the population of customers who purchased a videocassette recorder in the past 12 months into four strata based on the brand they purchased. Within each stratum, a simple random sample can then be selected. This would ensure that each brand is represented proportionally in the sample and increase the accuracy of the results.

The Manager of the Customer Service Division of a Major