Essay
A company that makes tennis balls controls its production process by periodically taking a sample of 100 balls from the assembly line. Each ball is checked for defective features. P-chart control limits are developed using 3 standard deviations from the mean as the limit. During the last 15 samples taken, the percentage of defective items per sample was recorded as follows:
Compute the mean percent defective.
a. Compute the UCL and the LCL.
Correct Answer:
Verified
Correct Answer:
Verified
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