Question: Refer to the data given in Exercise 8, and construct a control chart with an estimated center line and limits based on using the sample

Refer to the data given in Exercise 8, and construct a control chart with an estimated center line and limits based on using the sample standard deviations to estimate Ïƒ. Is there any evidence that the process is out of control?
Data of Exercise 8

e -22 9 7 3 3 5 2 3 4 99242238 6583 1111212 27 .5 3 6 4 5 5 9 5 9 3 3 5 4 5 6 1 5 63 8884824882 189 2 1899 2233232332222322333222 0999025158391 .4 5 3 9 1 1 8 0 .3 3223232322223333333233 .0 6563 .4 .4 9 7 2 2 1 9 6 8 2 030942 ti -3. 2 2 2 3 2 2 3 3 3 3 3 2 3 2 3 3 3 4 3 3 3 382021 .4 5 2 6 7 8 0 0 0 1 400471 3. 2 4 3 2 3 2 3 2 2 2 2 2 3 3 2333222 M -1370344843|33484782484 2323234232323223223223 24928926 6 8 6 5 4 5 3 6 104767 2. 2 2 3 2 3 2 2 4 2 2 3 3 3 2 2 2 2 2232 ! 1234567890123456789

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