Using the Shewhart charting methods described in Figure 2.4 in Chapter 2, analyze the performance of a check-clearing process. The standard time to clear a check is six seconds. The allowed variation is two seconds more or less than this time (your control limits).

REQUIRED:

a. Complete a Shewhart control chart for this activity.

b. Would you say the activity is under control? Why or why not?

Data from Figure 2.4 in Chapter 2

Transcribed Image Text:

Check # Time to Process 6 seconds 7 seconds 3 3 seconds 4 8 seconds 5 D seconds 5 seconds 6 seconds 8 D seconds 2.