Question

19. The following data show the values of sample means and the ranges for ten samples of size 4
each. Construct the control chart for mean and range chart and determine whether the process
is in control
Sample Number
1
2 3 4 5 6 7 8
9
ll
X
29
26
37
34
14
45
39 20
34
23
R
39
10
39
17
12
20
05
21
23
15​

Answer 1

Answer:

sorry mark brainlist