A study used 1259 patients who had suffered a stroke. The study randomly assigned each subject to anaspirin treatment or a placebo treatment. During a 3-year follow-up period, in Sample 1, 634 peoplereceived placebo treatments and 25 people died from heart attack. In sample 2, 625 people receivedaspirin treatment and 18 died from heart attack. Let pl denote the population proportion of deathfrom heart attack for those with no treatment and p2 denote the population proportion of death fromheart attack for those with aspirin treatment.(c) Which of SEO and SE1 is used for calculating a confidence interval for comparing two populationproportions? Which is used for calculating the test statistic in a hypothesis test?(d) Construct the 95% confidence interval for pi – p2. Interpret.

Out of 634 people received placebo, 25 people died from heart attack. That is, n1= 634 and x1= 25…

A study used 1259 patients who had suffered a stro aspirin treatment or a placebo treatment. During a 3-yea received placebo treatments and 25 people died from hea aspirin treatment and 18 died from heart attack. Let pl from heart attack for those with no treatment and p2 den heart attack for those with aspirin treatment.