Question

ICOL. ICULTUnTapUI SUCIU This Question: 1 pt 12 of 23 (19 completo) 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% confider confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values. Partial Critical Value Table A 99% confidence level requires subjects. (Round up to the nearest subject.) A 95% confidence level requires subjects. (Round up to the nearest subject) How does the decrease in confidence affect the sample size required? Area in Each Tall, a Critical Value, 2/2 Level of confidence. - 100% 90% 95% 99% 0.05 0.025 0. 005 2 .575 O A. The sample size is the same for all levels of confidence. OB. Decreasing the confidence level increases the sample size needed. OC. Decreasing the confidence level decreases the sample size needed Print Done

Answer 1

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