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A soft drink machine is regulated so that the amount of drink dispensed is distributed with a standard deviation of 5mLs. Find the sample size necessary to be 95% confident that our sample mean will be within 3mLs of the true mean.

A soft drink machine is regulated so that the amount of drink dispensed is distributed with a standard deviation of 5mLs. Find the sample size necessary to be 95% confident that our sample mean will be within 3mLs of the true mean.

MATLAB: An Introduction with Applications
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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Question 1 A sample of 49 observations is taken from a normal population. The sample mean is 58, and the S.D of the sample is 10. Determine the 95% and 99% confidence intervals for the population mean. Question 2 A soft drink machine is regulated so that the amount of drink dispensed is distributed with a standard deviation of 5mLs. Find the sample size necessary to be 95% confident that our sample mean will be within 3mLs of the true mean.
Transcribed Image Text:Question 1 A sample of 49 observations is taken from a normal population. The sample mean is 58, and the S.D of the sample is 10. Determine the 95% and 99% confidence intervals for the population mean. Question 2 A soft drink machine is regulated so that the amount of drink dispensed is distributed with a standard deviation of 5mLs. Find the sample size necessary to be 95% confident that our sample mean will be within 3mLs of the true mean.
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