Refer to Exercise 18. a. Find a 95 % 95 % upper confidence bound for the mean

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Refer to Exercise 18.

a. Find a $95 %$ upper confidence bound for the mean time.

b. Find a $98 %$ lower confidence bound for the mean time.

Data From Exercise 18:

One step in the manufacture of a certain metal clamp involves the drilling of four holes. In a sample of 150 clamps, the average time needed to complete this step was 72 seconds and the standard deviation was 10 seconds.

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Statistics For Engineers And Scientists

ISBN: 9780073107677

6th Edition

Authors: William Navidi

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Question Posted: Feb 04, 2024 05:00 AM

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One step in the manufacture of a certain metal clamp involves the drilling of four holes. In a sample of 150 clamps, the average time needed to complete this step was 72 seconds and the standard...
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Refer to Exercise 18. a. Find a 95 % 95 % upper confidence bound for the mean

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Statistics For Engineers And Scientists

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