Question: Find the appropriate limits and draw X-bar chart for controlling the weight of potato chips bags. X-double bar from samples is 16.2 Oz. And R-bar

Find the appropriate limits and draw X-bar chart for controlling the weight of potato chips bags. X-double bar from samples is 16.2 Oz. And R-bar is 1.25 Oz. The sample size is 5. A2 = 0.58 . Using the data below, comment on whether the process is under control.

Sample values
Hour # 1 2 3 4 5
1 16.5 16.6 16.7 16.8 16.9
2 16.2 16.5 15.9 15.8 16
3 15.4 16.2 16.4 16.8 16.2
4 14.8 15.4 14.9 15 15.2
a. LCL
b. UCL
c. Center line
d. The relevant averages for the next 4 hourly points
e. Is the process under control? Yes or no and explain.

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