The diameters​ (in inches) of 17 randomly selected bolts produced by a machine are listed. Use a 90​% level of confidence to construct a confidence interval for ​(a) the population variance σ2 and ​(b) the population standard deviation σ. Interpret the results.

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A: A random sample of 10 subjects has weights with a standard deviation (s) of 12.7425 kg.The aim is to…

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A: From the provided information,Confidence level = 90%

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A: Given that  Mean = 78.3 Standard deviation (SD) = 5.6

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A: x1 =473x2 = 459 s1 = 39.7s2 =24.5 n1 = 8n2 =18

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A: Note: According to bartleby experts question answers guidelines an expert can solve only first three…

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A: Given  n=46, Xbar=20, CV=0.6

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A: Given that  Sample sizes n1=70      , n2=85       Sample means X̄1=8.84     , X̄2=9.05      ?1 =0.30…

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A: Solution:

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