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A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 4 points with 99% confidence assuming s=15.3 based on earlier​ studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size​ required?   Question content area bottom Part 1

A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 4 points with 99% confidence assuming s=15.3 based on earlier​ studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size​ required?   Question content area bottom Part 1

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
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A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within
4
points with
99%
confidence assuming
s=15.3
based on earlier​ studies? Suppose the doctor would be content with
90%
confidence. How does the decrease in confidence affect the sample size​ required?
 
Question content area bottom
Part 1
A​ 99% confidence level requires
enter your response here
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 x Critical Value, Zα/2 2 Done 1.645 1.96 2.575 - X
Transcribed Image Text:Partial Critical Value Table Level of Confidence, (1-x). 100% 90% 95% 99% Area in Each Tail. Print 0.05 0.025 0.005 x Critical Value, Zα/2 2 Done 1.645 1.96 2.575 - X
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