and y This question: 1 point(s) possible Submit test 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 3 points with 99% confidence assuming s = 12.4 based on earlier studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values. A 99% confidence level requires | subjects. (Round up to the nearest subject.) A 90% confidence level requires | subjects. (Round up to the nearest subject.) How does the decrease in confidence affect the sample size required? O A. The sample size is the same for all levels of confidence. O B. Decreasing the confidence level decreases the sample size needed. O C. Decreasing the confidence level increases the sample size needed. Statcrunch Time Remaining: 00:43:59 Next MacBook Air 80 888 DD F3 FA FO @ W 4 5 6 W E R T Y U O P S D F G H J K