In an article in Quality Engineering, a research article presented individual measurement data on sand compactibility, as follows:
|
46
|
43
|
41
|
42
|
40
|
44
|
40
|
41
|
40
|
42
|
|
41
|
41
|
43
|
43
|
40
|
38
|
45
|
42
|
41
|
43
|
|
42
|
43
|
39
|
44
|
44
|
45
|
43
|
42
|
41
|
46
|
|
41
|
39
|
40
|
40
|
42
|
44
|
42
|
40
|
43
|
|
For this data, the author reported that the lower and upper specifications for sand compactibility are 38 and 46, respectively. Use this information to calculate the Cp and Cpk values.