In a trial of 125 patients who received 10-mg doses of a drug daily, 40 reported headache as a side effect. Use this information to complete parts (a) and (b) below. (a) Verify that the requirements for constructing a confidence interval about p are satisfied. Are the requirements for constructing a confidence satisfied? A. Yes, the requirements for constructing a confidence interval are satisfied. OB. No, the requirement that the sample size is no more than 5% of the population is not satisfied. OC. No, the requirement that np (1 - p) is greater than 10 is not satisfied. D. No, the requirement that each trial be independent is not satisfied. A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 4 percentage points with 90% confidence if (b) he does not use any prior estimates? (a) he uses a previous estimate of 22%? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) n = (Round up to the nearest integer.) 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 = 15.8 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.)