Please help me answer all the following33-38

Inferences from Two Population Proportions 33) Construct a 99% confidence interval for P1 - P2 . Data Set | Data Set Il x =15 x, =10 n - 45 n2 - 85 34) Suppose 270 out of 320 randomly selected heart bypass patients at Hospital A survived. Whereas 310 out of 360 randomly selected heart bypass patients at Hospital B survived. Construct a 95% confidence interval for the difference of survival rates (percentages or proportions) 35) In clinical tests of adverse reactions to a certain drug, 7% of the 640 subjects in the treatment group experienced severe headaches, whereas 2% of the 580 subjects in the placebo group experienced severe headaches. Construct a 98% confidence interval for the difference between the rates (percentage or proportion). 36) A random sample of 1650 adult male showed that 68% consume 1670 calories per day. A random sample of 2000 adult female showed that 58% consume 1670 calories per day. Construct a 95% confidence interval for the true difference between the consumption rate of male and female adults. 37) A sample of college seniors showed that 15 of 50 who owned PlayStation 3 spent more than an hour a day playing games, compared with 35 of 100 who owned Zoo-box 300. Construct a 95% confidence interval for the difference between the two population proportions 38) A medical research team studied the effects of a new drug on ADD patients. Of 87 patients who used the drug for two years, 20 showed improvements. Of 104 patients who used the drug for six months, 26 showed improvement. Construct a 98% confidence interval for the difference of the improvement percentages