Question:

# Preventing heart attacks: Medical researchers performed a comparison of two drugs, clopidogrel and ticagrelor, which are designe

Preventing heart attacks: Medical researchers performed a comparison of two drugs, clopidogrel and ticagrelor, which are designed to reduce the risk of heart attack or stroke in coronary patients. A total of 6714 patients were given clopidogrel, and 6657 were given ticagrelor of the clopidogrel patients, 562 suffered a heart attack or stroke within one year, and of the ticagrelor patients, 675 suffered a heart attack or stroke. Can you conclude that the proportion of patients suffering a heart attack or stroke is greater for ticagrelor? Let P, denote the proportion of patients suffering a heart attack or stroke with clopidogrel and P2 denote the proportion patients suffering a heart attack or stroke with ticagrelor. Use the a0.10 level of significance and the critical value method. Part 1 of 5 State the null and alternate hypotheses. H.: P.-P HIPICP2 This hypothesis test is a left-talled vtest. Part 2 of 5 Find the critical value(s). Round the answer(s) to two decimal places. If there is more than one critical value, separate them with commas. Critical value(s): 1.28 Part: 2/5 Part 3 of 5 Compute the test statistic. Round the answer to two decimal places. - 0 5