Two types of medication for hives are being tested to determine if there is a difference in the proportions of adult patient reactions. Twenty out of a random sample of 200 adults given medication A...

Extracted text: Two types of medication for hives are being tested to determine if there is a difference in the proportions of adult patient reactions. Twenty out of a random sample of 200 adults given medication A still had hives 30 minutes after taking the medication. Twelve out of another random sample of 200 adults given medication B still had hives 30 minutes after taking the medication. Sample1: medication A, Sample2: medicationB (a) Find the 99% confidence interval for the difference in the proportions of adult patient reactions. Round your answer to nearest ten- thousandth. Round confidence interval to the nearest ten-thousandth if necessary. (0.12456 would be entered as 0.1246) Lower Upper (b) Is there any difference in the proportions of adult patient reactions? . (enter "yes" or "no") If your answer is "yes", which proportion is greater? (enter "A" or "B", or if your answer is "no", enter "na")