Suppose that over the last 20 weeks, a law firm had a total of 1045 consultation calls, and that 126 of them did not get an appointment for an initial consult within 24 hours.The centerline on the appropriate control chart for these data is ________________________ .
A)0.006
B)0.098
C)0.121
D)0.223
E)0.412

Question

Quizplus · Accepted Answer

The centerline for a control chart for proportions is calculated as the total number of failures (calls not getting an appointment within 24 hours) divided by the total number of calls. Here, it is 126/1045 = 0.1205, which rounds to 0.121.

Suppose That Over the Last 20 Weeks, a Law Firm