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A new production process is being contemplated for the manufacture of stainless steel bearings. Measurements of...

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Question

Basic Math

A new production process is being contemplated for themanufacture of stainless steel bearings. Measurements of thediameters of random samples of bearings from the old and newprocesses produced the following data (all in mm): Old

Old

New

16.3

15.9

15.9

16.2

15.8

16.0

16.2

15.8

16.1

16.1

16.0

16.1

15.7

15.8

15.8

16.0

15.9

16.2

16.1

15.9

16.3

15.7

16.1

16.2

15.8

15.8

15.7

15.8

15.8

16.2

15.7

16.3

.

A. Can you conclude that the variances between the new and oldprocedure are different? Use formal hypothesis testing.

b. Can you conclude that there is a difference in mean diameterbetween the procedures? Use formal hypothesis testing.

c. Management wants to know if the new procedure is comparableto the old procedure. What can you tell them? (Give a yes/no answerand your reasoning, based on statistics.)

Answer & Explanation Solved by verified expert
4.2 Ratings (748 Votes)
We use Minitab to solve this questionA No We can not conclude that the variances between the newand old procedure are different    See Answer
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