Question

In: Statistics and Probability

To determine if their 2.00 inch washers are properly adjusted, Duncan & Hall Inc. has decided...

To determine if their 2.00 inch washers are properly adjusted, Duncan & Hall Inc. has decided to use an x‾-Chart which uses the range to estimate the variability in the sample.

Table:

Period

obs1

obs2

obs3

obs4

obs5

Sample Mean

Sample Range

1

1.96

2.05

1.97

1.97

2

1.99

0.09

2

2

2.05

1.95

2

2.05

2.01

0.1

3

2.04

1.96

1.96

1.97

1.96

1.978

0.08

4

1.97

2

1.98

1.99

1.99

1.986

0.03

5

1.97

2.05

1.98

2.04

2.05

2.018

0.08

6

2.03

2.05

2.01

1.96

1.96

2.002

0.09

7

2.02

1.98

2.03

1.96

2.01

2

0.07

8

1.99

1.99

2.01

1.98

1.97

1.988

0.04

9

2

2.03

1.99

1.95

1.97

1.988

0.08

10

1.95

1.99

1.98

1.96

2

1.976

0.05

11

2.03

1.98

1.96

2.02

2.04

2.006

0.08

Step 4 of 7:

Use the following sample data, taken from the next time period, to determine if the process is "In Control" or "Out of Control".
Observations: 2.07,2.08,2.07,2.08,2.05
Sample Mean: 2.07

Solutions

Expert Solution

orchestra answered 3 years ago
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