Ten customers per hour were asked by the cashier at Stanleys Deli if they liked their meal,
Question:
Ten customers per hour were asked by the cashier at Stanley’s Deli if they liked their meal, and the fraction that said “no” are shown below, for a twelve-hour period.
For the data shown above, find
a. P.
b. σP.
c. The 3-sigma UCL and LCL.
d. Does customer satisfaction at Stanley’s appear to be in statistical control? How could we improve the analysis?
Transcribed Image Text:
HOUR FRACTION DEFECTIVE HOUR FRACTION DEFECTIVE 3 0.1 0.2 0.4 0.1 0.1 0.2 10 0.2 12 0.1
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a 1412 1167 b SQRT 1167883310 1015 c UCL 1167 31015 042 LCL 1167 31015 ...View the full answer
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