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Author Question: In order to estimate the average electric usage per month, a sample of 196 houses was selected, and ... (Read 72 times)

sreghbsidhgjbndskijgnio

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on: Mar 25, 2023

In order to estimate the average electric usage per month, a sample of 196 houses was selected, and their electric usage determined.

a.Assume a population standard deviation of 350-kilowatt hours. Determine the standard error of the mean.
b.With a 0.95 probability, determine the margin of error.
c.If the sample mean is 2,000 KWH, what is the 95% confidence interval estimate of the population mean?

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by sreghbsidhgjbndskijgnio on Mar 25, 2023

wangyichun

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Reply #1 on: Mar 25, 2023
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sreghbsidhgjbndskijgnio

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Reply 2 on: Mar 25, 2023
Wow, this really help

Animal_Goddess

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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