An airline wants to monitor the performance of their baggage handling crew on the daily flight from Syracuse to Boston that is always filled to its 140 passenger capacity. They track the number of passengers that lose bags each flight for a two week period. The data are displayed in the following table.

-Calculate the lower control limit for the chart, using z = 3.
A)0.0148
B)0.0760
C)0.2844
D)0.0316
E)0.0000

Question

An airline wants to monitor the performance of their baggage handling crew on the daily flight from Syracuse to Boston that is always filled to its 140 passenger capacity. They track the number of passengers that lose bags each flight for a two week period. The data are displayed in the following table.
 
-Calculate the lower control limit for the chart, using z = 3.
A)0.0148 
B)0.0760 
C)0.2844 
D)0.0316 
E)0.0000

Quizplus · Accepted Answer

The lower control limit (LCL) for a control chart is calculated as the mean minus three times the standard deviation (z = 3). If the calculated LCL is negative, it is set to zero, as negative values are not possible in this context.

An Airline Wants to Monitor the Performance of Their Baggage