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 65 large a sample of bestselling novels is needed to achieve pages, how 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 - O Type here to search

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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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 65 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
O Type here to search
II
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 65 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 O Type here to search II
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