Chapter 31, Problem 31.37CYS

To determine

To identify: The center line for the given chart.

Explanation of Solution

Reason for the correct answer:

Here, the mean response distance is plotted on an $\overline{x}$ control chart and the value of $\mu$ is 48. Hence, the center line for $\overline{x}$ chart is 48 inches.

Reason for the incorrect answer:

The center line for $\overline{x}$ chart is 48 inches. Hence, options (a) and (b) are incorrect.

Conclusion:

Therefore, the correct option is (b).

Statistics Concept Introduction

Introduction:

Center line for $\overline{x}$ chart:

Formula for center line of $\overline{x}$ chart is $\mu$.

Correct answer:

Option (b), “48 inches”.