Question: Problem 6 (6 pts 2 + 2 + 2) A quality analyst wants to construct a sample mean chart for controlling a packaging process. He

Problem 6 (6 pts 2 + 2 + 2) A quality analyst

Problem 6 (6 pts 2 + 2 + 2) A quality analyst wants to construct a sample mean chart for controlling a packaging process. He knows from past experience that the process standard deviation is two kilograms. Each day last week, he randomly selected four packages and weighed each one. The data from that activity appears below. You do NOT need to show your work. There is NO partial credits for any mistake (i.e., each answer is either right or wrong). Weights Days Package 1 Package 2 Package 3 Package 4 23 22 23 24 Monday Tuesday 23 21 19 21 Wednesday 20 19 20 21 Thursday 18 19 20 19 Friday 18 20 22 20 Q.6.A. What is the sample size (n) in this problem? And what is the number of samples (k) in this problem? No explanation needed here. Q.6.B. Calculate the UCL and the LCL for the X-bar chart, using $20 for variations due to natural causes. Q.6.C. Is the process in control or out of control? Justify your

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