A food company that makes chocolate chip cookies and sells bags of the cookies in grocery stores periodically does a quality control check of the cookies that it makes to determine if on average the cookies contain 25 chocolate chips, the intended population mean number of chocolate chips per cookie. A random sample of 35 cookies is chosen. The mean of the sample is 23.95 chocolate chips. From past quality control checks the population standard deviation remained a consistent 2.55 chocolate chips. Construct a 99% confidence interval estimate of the mean number of chocolate chips in the current population of the company's chocolate cookies.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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A food company that makes chocolate chip cookies and sells bags of the cookies in grocery stores periodically does a quality control check of the cookies that it makes to determine if on average the cookies contain 25 chocolate chips, the intended population mean number of chocolate chips per cookie. A random sample of 35 cookies is chosen. The mean of the sample is 23.95 chocolate chips. From past quality control checks the population standard deviation remained a consistent 2.55 chocolate chips. Construct a 99% confidence interval estimate of the mean number of chocolate chips in the current population of the company's chocolate cookies.
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