"M" Subscript, "e" "a" "n" "C" "u" "b" "e" "S" "i" "z" "e" , BaselineMeanCubeSize
11
242.5242.5
22
277.1277.1
33
250.0250.0
44
234.2234.2
55
229.7229.7
66
243.6243.6
77
282.8282.8
88
303.0303.0
99
247.7247.7
1010
217.0217.0
1111
278.6278.6
1212
244.2244.2
1313
195.4195.4
1414
224.3224.3
1515
382.1382.1
1616
242.4242.4
1717
226.5226.5
1818
284.4284.4
1919
239.1239.1
2020
288.2288.2
3
a. Create an x‑bar process control chart.
4
b. At which hour did the process go out of control? Consider the context and make conjectures about what might have happened during the manufacturing process this hour to make the process go out of control.