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People were polled on how many books they read the previous year. Initial survey results indicate that s = 16.1 books. Complete parts (a) throug Click the icon to view a partial table of critical values.

People were polled on how many books they read the previous year. Initial survey results indicate that s = 16.1 books. Complete parts (a) throug Click the icon to view a partial table of critical values.

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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People were polled on how many books they read the previous year. Initial survey results indicate that s = 16.1 books. Complete parts (a) through (d) below. Click the icon to view a partial table of critical values. (a) How many subjects are needed to estimate the mean number of books read the previous year within six books with 95% confidence? This 95% confidence level requires 28 subjects. (Round up to the nearest subject.) (b) How many subjects are needed to estimate the mean number of books read the previous year within three books with 95% confidence? This 95% confidence level requires subjects. (Round up to the nearest subject.)
Transcribed Image Text:People were polled on how many books they read the previous year. Initial survey results indicate that s = 16.1 books. Complete parts (a) through (d) below. Click the icon to view a partial table of critical values. (a) How many subjects are needed to estimate the mean number of books read the previous year within six books with 95% confidence? This 95% confidence level requires 28 subjects. (Round up to the nearest subject.) (b) How many subjects are needed to estimate the mean number of books read the previous year within three books with 95% confidence? This 95% confidence level requires subjects. (Round up to the nearest subject.)
Level of Confidence, (1-x) 100% 90% 95% 99% Area in Each Tail, 0.05 0.025 0.005 α 2 Critical Value, Zα/2 1.645 1.96 2.575
Transcribed Image Text:Level of Confidence, (1-x) 100% 90% 95% 99% Area in Each Tail, 0.05 0.025 0.005 α 2 Critical Value, Zα/2 1.645 1.96 2.575
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