Construct a 90% confidence interval to estimate the population mean. The standard deviation of the population is

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Construct a 90% confidence interval to estimate the population mean. The standard deviation of the population is 20. They get a sample of size 30 and got a sample mean of 40?

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Elementary Statistics In Social Research Essentials

ISBN: 9780205638000

3rd Edition

Authors: Jack A. Levin, James Alan Fox

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Question Posted: Mar 21, 2018 04:40 AM

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Construct a 90% confidence interval to estimate the population mean. The standard deviation of the population is

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Here we have X 40 n 30 20 For 90 confide...View the full answer

Elementary Statistics In Social Research Essentials

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