A corporate analyst is testing whether mean inventory turnover has increased.Inventory turnover in six randomly chosen product distribution centers (PDCs)is shown. The degrees of freedom for the appropriate test would be:
A) 6.
B) 5.
C) 4.
D) 12.

Question

Quizplus · Accepted Answer

The appropriate test for testing whether mean inventory turnover has increased is a one-sample t-test. Since six PDCs were randomly chosen, the sample size is 6. The degrees of freedom for a one-sample t-test with a sample size of 6 is 5 (df=n-1). Therefore, the correct answer is B.

A Corporate Analyst Is Testing Whether Mean Inventory Turnover Has