Question: A quality analyst wants to construct a sample mean chart for controlling packaging process. He knows from past experience that the process standard deviation is

A quality analyst wants to construct a sample mean chart for controlling packaging process. He knows from past experience that the process standard deviation is two ounces. Each day! last week, he randomly selected four packages and weighed each. The data from that activity appears below. Weight Day Package 1 Package 2 Package 3 Package 4 Monday Tuesday Wednesday Thursday Friday 22 24 21 23 19 18 18 (a) What is sample size? (b) What is the number of samples? (c) What control chart(s) should be used here? (d) Calculate the CL, UCL and LCL for the control chart(s) (e) Is this process in control

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