Concept explainers
Obtain the
Answer to Problem 1SE
The upper, center and lower control limits for p chart is
Explanation of Solution
Given info:
The information is based on monitoring the defective items by considering a sample of 300 items per day. Let the proportion of the defective items for the ith sample be denoted as pi.
The sum of the proportion defective is given by:
Calculation:
Control Limits for
Where,
Let N denotes the number of samples and n be the
The value of
Substitute
Thus, the center line is 0.0583.
Verify the condition:
Substitute
The condition
Substitute
Substitute
Thus, the upper, center and lower control limits for p chart is
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Chapter 10 Solutions
Statistics for Engineers and Scientists (Looseleaf)
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