Find the 90% confidence interval for the standard deviation of the lengths of pipes if a...

Find the 90% confidence interval for the standard deviation of the lengths of pipes if a sample of 22 pipes has a standard deviation of 10.6 inches.

a. (8.3, 13.8)

b. (8.5, 13.3)

c. (8.5, 14.3 )

d. (8.1, 15.3)

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The answer is:

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orchestra answered 10 months ago

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