Sampling 4 packages of frozen peas every hour has shown the following mean weights and ranges.
|
Hour
|
Mean
|
R
|
|
1
|
12.1
|
0.3
|
|
2
|
11.8
|
0.2
|
|
3
|
11.8
|
0.3
|
|
4
|
12.1
|
0.3
|
|
5
|
12.0
|
0.3
|
|
6
|
12.1
|
0.4
|
|
7
|
11.8
|
0.3
|
|
8
|
12.2
|
0.4
|
|
9
|
11.9
|
0.3
|
|
10
|
12.0
|
0.3
|
|
11
|
12.1
|
0.3
|
|
12
|
12.1
|
0.2
|
Using this data, find the UCL and LCL for the mean.
Using this data, find the UCL and LCL for R.
Which sample means, if any, are out of control? (You do not have to graph.)
Which ranges, if any? Are out of control? (You do no. have to graph.)