Construct a three-sigma control chart


Discuss the below:

Q: A production manager at a tire manufacturing plant has inspected the number of defective tires in twenty random samples with twenty observations each. Following are the number of defective tires found in each sample:


Number of

Number of


Sample

Defective

Observations

Fraction

Number

Tires

Sampled

Defective

1

3

20

.15

2

2

20

.10

3

1

20

.05

4

2

20

.10

5

1

20

.05

6

3

20

.15

7

3

20

.15

8

2

20

.10

9

1

20

.05

10

2

20

.10

11

3

20

.15

12

2

20

.10

13

2

20

.10

14

1

20

.05

15

1

20

.05

16

2

20

.10

17

4

20

.20

18

3

20

.15

19

1

20

.05

20

1

20

.05

Total

40

400


Construct a three-sigma control chart (z=3) with this information.

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Operation Management: Construct a three-sigma control chart
Reference No:- TGS02054649

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