People were polled on how many books they read the previous year. Initial survey results indicate that s= 14.3 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 four books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject.) Partial Critical Value Table Level of Confidence, (1-x) 100% 90% 95% 99% Area in Each Tail, Print 0.05 0.025 0.005 α 2 Done Critical Value, Zα/2 C... 1.645 1.96 2.575
People were polled on how many books they read the previous year. Initial survey results indicate that s= 14.3 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 four books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject.) Partial Critical Value Table Level of Confidence, (1-x) 100% 90% 95% 99% Area in Each Tail, Print 0.05 0.025 0.005 α 2 Done Critical Value, Zα/2 C... 1.645 1.96 2.575
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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Transcribed Image Text:People were polled on how many books they read the previous year. Initial survey results indicate that s = 14.3 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 four books with 90% confidence?
This 90% confidence level requires subjects. (Round up to the nearest subject.)
Partial Critical Value Table
Level of Confidence,
(1-x) 100%
90%
95%
99%
Area in Each Tail,
Print
0.05
0.025
0.005
α
2
Done
Critical Value, Zα/2
1.645
1.96
2.575
X
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