Of the two production methods, a company wants to identify the method with the smaller population mean completion time. One sample of workers is selected and each worker first uses one method and then uses the other method. The sampling procedure being used to collect completion time data is based on
A) worker samples.
B) pooled samples.
C) independent samples.
D) matched samples.

Question

Of the two production methods, a company wants to identify the method with the smaller population mean completion time. One sample of workers is selected and each worker first uses one method and then uses the other method. The sampling procedure being used to collect completion time data is based on​
A) ​worker samples.
B) ​pooled samples.
C) ​independent samples.
D) ​matched samples.

Quizplus · Accepted Answer

Matched samples involve using the same individuals to test both methods, which eliminates individual differences and reduces variability. This is the appropriate sampling method to identify the difference in completion time for the two production methods.

Of the Two Production Methods, a Company Wants to Identify