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a. 90% confidence? (Your answer should be a whole number) b. 95% confidence? (Your answer should be a whole number) c. Identify the variable in this context

a. 90% confidence? (Your answer should be a whole number) b. 95% confidence? (Your answer should be a whole number) c. Identify the variable in this context

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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An editor wants to estimate average the number of pages in bestselling novels, so that his estimate falls within 20 pages of the true average. Assuming that the standard deviation is 70 pages, how large a sample of bestselling novels is needed to achieve a. 90% confidence? (Your answer should be a whole number) b. 95% confidence? (Your answer should be a whole number) c. Identify the variable in this context d. Identify an individual in this context
Transcribed Image Text:An editor wants to estimate average the number of pages in bestselling novels, so that his estimate falls within 20 pages of the true average. Assuming that the standard deviation is 70 pages, how large a sample of bestselling novels is needed to achieve a. 90% confidence? (Your answer should be a whole number) b. 95% confidence? (Your answer should be a whole number) c. Identify the variable in this context d. Identify an individual in this context
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