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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 2 points with 99% confidence assuming s=13.9 based on earlier​ studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size​ required? LOADING... Click the icon to view a partial table of critical values.         Question content area bottom Part 1 A​ 99% confidence level requires enter your response here subjects. ​(Round up to the nearest​ subject.) Part 2 A 90% confidence level requires enter your response here subjects. ​(Round up to the nearest​ subject.) Part 3 How does the decrease in confidence affect the sample size​ required?

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 2 points with 99% confidence assuming s=13.9 based on earlier​ studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size​ required? LOADING... Click the icon to view a partial table of critical values.         Question content area bottom Part 1 A​ 99% confidence level requires enter your response here subjects. ​(Round up to the nearest​ subject.) Part 2 A 90% confidence level requires enter your response here subjects. ​(Round up to the nearest​ subject.) Part 3 How does the decrease in confidence affect the sample size​ required?

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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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
2
points with
99%
confidence assuming
s=13.9
based on earlier​ studies? Suppose the doctor would be content with
90%
confidence. How does the decrease in confidence affect the sample size​ required?
LOADING...
Click the icon to view a partial table of critical values.
 
 
 
 

Question content area bottom

Part 1
A​ 99% confidence level requires
enter your response here
subjects. ​(Round up to the nearest​ subject.)
Part 2
A
90%
confidence level requires
enter your response here
subjects. ​(Round up to the nearest​ subject.)
Part 3
How does the decrease in confidence affect the sample size​ required?
Partial Critical Value Table Level of Confidence, (1-a). 100% 90% 95% Area in Each Tail, Print 0.05 0.025 0.005 2 Done Critical Value, Z/2 1.645 1.96 2.575
Transcribed Image Text:Partial Critical Value Table Level of Confidence, (1-a). 100% 90% 95% Area in Each Tail, Print 0.05 0.025 0.005 2 Done Critical Value, Z/2 1.645 1.96 2.575
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