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 99% confidence assuming s= 12.1 based on earlier studies? Suppose the doctor would be content with 90% confidence. How does the decrease size required? Click the icon to view a partial table of critical values. A 99% confidence level requires subjects. (Round up to the nearest subject.)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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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= 12.1 based on earlier studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample
size required?
Click the icon to view a partial table of critical values.
A 99% confidence level requires subjects. (Round up to the nearest subject.)
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60°F
O 4) O
to search
O
Transcribed Image Text: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= 12.1 based on earlier studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values. A 99% confidence level requires subjects. (Round up to the nearest subject.) Help me solve this View an example Get more help - Clear all Check answer 60°F O 4) O to search O
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