
444 A First Course in Quality Engineering
TABLE 7.7
Double Sampling Plans for Tightened Inspection (MIL-STD-105E—Table III-B)
Sample
size
code
letter
Sa
mple
size
Cumu-
lative
sample
size
A
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
First
Second
B
C
D
E
F
G
H
J
K
L
M
N
Q
p
R
S
Sample
Acceptable quality levels (lightened inspection)
Ac Re Ac Re
0 02
1
1
2
23
3
3
4 4
4
5
5
6 7
7 6 10 9 14 15 20
34 35
23 29
52 5323 2415 1611 12
0 02
1
1
2
23
3
3
4 4
4
5
5
6 7
7 6 10 9 14 15 20
34 35
23 29
52 5323 2415 1611 12
0 02
1
1
2
23
3
3
4 4
4
5
5
6 7
7 6 10 9 14 15 20
34 35
23 29
52 5323 2415 1611 12
0 02
1
1
2
23
3
3
4