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part c. Only answer letters a and b. Maintain 4-de

part c. Only answer letters a and b. Maintain 4-de

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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Disregard part c. Only answer letters a and b.

Maintain 4-decimal places.

The average gold content from an ore sample in 36 different locations is found to be 2.6 grams per ton. a. Find the 95% and 99% confidence intervals for the mean gold content in that area. Assume that the population variance is 0.09. b. How large a sample is required if we want to be 95% confident that our estimate of sample mean is off by less than 0.057? c. Compute a 95% confidence interval for the standard deviation of the gold content.
Transcribed Image Text:The average gold content from an ore sample in 36 different locations is found to be 2.6 grams per ton. a. Find the 95% and 99% confidence intervals for the mean gold content in that area. Assume that the population variance is 0.09. b. How large a sample is required if we want to be 95% confident that our estimate of sample mean is off by less than 0.057? c. Compute a 95% confidence interval for the standard deviation of the gold content.
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