3. A simple random sample of 60 items resulted in a sample mean of 80. The populationstandard deviation is o = 15.%3DCompute the 95% confidence interval for the population mean.Assume that the same sample mean was obtained from a sample of 120 items. Providea 95% confidence interval for the population mean.a.b.c.What is the effect of a larger sample size on the interval estimate?

Answered: Image /qna-images/answer/8fbf98f6-84b6-4004-8882-4245e920a539.jpg

Answered: 3. A simple random sample of 60 items…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 65 dates, the mean record high daily temperature in a certain city has a mean of 84.70°F. Assume the population standard deviation is 14.54°F.
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You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals.From a random sample of 66 dates, the mean record high daily temperature in a certain city has a mean of 85.22 F. Assume the population standard deviation is 15.45 F.

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