Alonzo M.

asked • 05/18/18

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 withi

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 equals 19.4 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. ( 0.05 1.645)
A 99% confidence level requires how many subjects?

1 Expert Answer

By:

Andy C. answered • 05/19/18

Tutor
4.9 (27)

Math/Physics Tutor

Zulenka P.

hello how did you get 0.04 and i believe the second answer is wrong
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04/11/19

Niya I.

Hello. I have the same question as to the one above?
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11/10/20

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