Twenty-five samples of 100 items each were inspected when a process was considered to be operating...

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 155 items were found to be defective.

(a)What is an estimate of the proportion defective when the process is in control?

____?___

(b)What is the standard error of the proportion if samples of size 100 will be used for statistical process control? (Round your answer to four decimal places.)

____?____

(c)Compute the upper and lower control limits for the control chart. (Round your answers to four decimal places.)

UCL=

LCL=

Expert Solution

orchestra answered 2 years ago

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