Question

(PLEASE PUT HO,HA, RIGHT/LEFT TAIL, TWO TAILS,CRITICAL VALUE, ALPHA,TEST-STATISTIC,P-VALUE,DECISION AND CONCLUSION)

1. Does aspirin reduce heart attacks? In a study 11037 males physicians were given aspirin daily and 139 experience a heart attack withing a 10 year period, while 11034 male physicians were given a placebo daily and 239 experienced a heart attack in the same 10 year period. Use a significance level of .05 to test the claim that daily use of aspirin reduces the proportion of those who get heart attacks.

2. Test the claim that females score higher on AP english exames than males. In a sample of 40 female students who took the AP English exam their mean was 3.7 with a standard deviation of 1.8. Whle a sample of 37 male students who took this exam had a mean of 3.1, with a standard deviation of 1.5. Use a significance level of .01.

Answer 1