(p. 103). For transformers built for heavy industry, the distribution of the number of sags per week...

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(p. 103). For transformers built for heavy industry, the distribution of the number of sags per week has a mean of 353 with a standard deviation of 30. Of interest is x, the sample mean number of sags per week for a random sample of 45 transformers.

a. Find E(x) and interpret its value.

b. Find Var(x).

c. Describe the shape of the sampling distribution of x.

d. How likely is it to observe a sample mean number of sags per week that exceeds 400?

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Statistics For Business And Economics

ISBN: 9781292413396

14th Global Edition

Authors: James McClave, P. Benson, Terry Sincich

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Question Posted: Jul 19, 2024 05:03 PM

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(p. 103). For transformers built for heavy industry, the distribution of the number of sags per week...

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Statistics For Business And Economics

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