Better than aspirin 2? A clinical trial compares the new drug described in Exercise 1 to aspirin. The group using the new drug had somewhat fewer heart attacks than those in the aspirin group. a) The...

Better than aspirin 2? A clinical trial compares the new drug described in Exercise 1 to aspirin. The group using the new drug had somewhat fewer heart attacks than those in the aspirin group.

a) The P-value from the hypothesis test was 0.28. What do you conclude?

b) What would you have concluded if the P-value had been 0.004?

1.  Better than aspirin? A very large study showed that aspirin reduced the rate of first heart attacks by 44%. A pharmaceutical company thinks they have a drug that will be more effective than aspirin, and plans to do a randomized clinical trial to test the new drug.

 a) What is the null hypothesis the company will use?

b) What is their alternative hypothesis?