A doctor wants to estimate the mean HDL cholesterol of all

Last updated: 12/2/2023

A doctor wants to estimate the mean HDL cholesterol of all 20 needed to estimate the mean HDL cholesterol within 3 points with 99 confidence assumi earlier studies Suppose the doctor would be content with 90 confidence How does the decrease in confide affect the sample size required Click the icon to view a partial table of critical values A 99 confidence level requires 191 subjects Round up to the nearest subject A 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 0 05 0 025 0 005 2 Critical Value Z 2 1 645 1 96 2 575 I X