For questions 1-4. The number and proportion of defective (nonconforming) book bindings, of forty samples (lots) of n =50 books
each, is given below. Calculate the P chart
saruple D sample D.
12
7
22
2
7
5
11
4
8
7
5
11
5
24
25
26
27
0
9
7
16
6
28
10
11
10
8
15
10
30
7
13
8
13
5
26
8
13
14
16
15
10
36
37
38
10
11
11
10
18
16
15
10
10
What is the average of P? (four decimal places)
Select one
a 0.2025
b. 02250
c. 0.2520
d. 02052​