Question

In: Statistics and Probability

Ten samples of 15 parts each were taken from an ongoing process to establish a p...

  1. Ten samples of 15 parts each were taken from an ongoing process to establish a p chart for control. The samples and the number of defectives in each are shown in the following table:

Sample

n

Number of defects in Sample

Sample

n

Number of defects in Sample

1

15

3

6

15

2

2

15

1

7

15

0

3

15

0

8

15

4

4

15

2

9

15

1

5

15

0

10

15

0

  1. Develop a p-chart for 99.7 percent confidence (3 standard deviations).
  2. Based on the plotted data points, what comments can you make?

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