Question: Twenty-five samples of 100 items each were inspected when a process was considered to be operating satisfactorily. In the 25 samples, a total of 135

Twenty-five samples of 100 items each were inspected when a process was considered to be operating satisfactorily. In the 25 samples, a total of 135 items were found to be defective. a) What is an estimate of the proportion defective when the process is in control (to 3 decimals)? b) What is the standard error of the proportion if samples of size 100 will be used for statistical process control (to 4 decimals)? c) Compute the upper control limit and lower control limit for the control chart (to 4 decimals, if necessary)? If your answer is "0", enter 0.

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