The rpm of a continuously running wheel is determined every minute. The following data described the measurements of the last 24 minutes.
|
Test
|
RPM
|
Test
|
RPM
|
|
1
|
2900
|
13
|
3054
|
|
2
|
2868
|
14
|
3042
|
|
3
|
3126
|
15
|
2878
|
|
4
|
3068
|
16
|
2798
|
|
5
|
3036
|
17
|
3122
|
|
6
|
2826
|
18
|
3024
|
|
7
|
3186
|
19
|
2888
|
|
8
|
2998
|
20
|
3106
|
|
9
|
2746
|
21
|
3096
|
|
10
|
2986
|
22
|
2878
|
|
11
|
3138
|
23
|
2994
|
|
12
|
3108
|
24
|
3124
|
a) Does data given above follow the normal distribution?
b) Employ the above data to set up the control chart and a moving range chart. Comment upon whether the procedure exhibits statistical control.
c) Estimate the mean and standard deviation.