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PP and PPK LEAN Six Sigma Black Belt
Constructa histogram from the data below.
Isthe processes approximately normally distributed?
CalculatePp and Ppk.
Arethe processes acceptable?
Data: Wait times
2
11
9
8
6
12
9
9
8
13
11
7
7
10
14
4
8
10
9
9
15
9
9
6
10
9
7
9
8
5
Pp (round finalresult to 6 decimal places):
Ppk (round finalresult to 6 decimal places):
Is the processreasonably normally distributed?
Yesor NO
Is the processacceptable? What is the basis for your decision?
Yesor No, and Why
Con
Isthe processes approximately normally distributed?
CalculatePp and Ppk.
Arethe processes acceptable?
Data: Wait times
2
11
9
8
6
12
9
9
8
13
11
7
7
10
14
4
8
10
9
9
15
9
9
6
10
9
7
9
8
5
