MGEB12H3 Lecture Notes - Lecture 4: Aspirin, Test Statistic, Confidence Interval
6 Apr 2019
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Question 1: in an attempt to study the relationship between the daily use of aspirin as a measure to prevent stroke, a researcher has divided a group of 4500 women over 64 years of age. They were randomly assigned to receive either aspirin or placebo [a pill that looks exactly like aspirin but has no active ingredients]. 2280: test at 1% if there is a difference in taking or not taking aspirin in preventing stroke. Report the p-value and clearly state your conclusion. The p-value is <1% therefore the test is very strong. There is overwhelming evidence in favor of the null. There is a difference: go back to part (a). Find the 95% confidence interval for the difference in the population proportions. In a study, a random sample of 120 college students was selected. Each student was asked whether or not they exercised regularly (at least 30 minutes of aerobic exercise 3 times a week).
