A very large study showed that aspirin reduced the rate of firstheart attacks by 45%. A pharmaceutical company thinks it has a drugthat will be more effective than aspirin, and plans to do arandomized clinical trial to test the new drug. Complete parts athrough d below.
a) What is the null hypothesis the company will use?
A. The new drug is not more effective than aspirin.
B. The new drug is more effective than aspirin.
C. The new drug is less effective than aspirin.
D. The new drug is as effective as aspirin.
b) What is their alternative hypothesis?
A. The new drug is as effective as aspirin.
B. The new drug is not more effective than aspirin.
C. The new drug is less effective than aspirin.
D. The new drug is more effective than aspirin.
c) The company conducted the study and found that the groupusing the new drug had somewhat fewer heart attacks than those inthe aspirin group. The P-value from the hypothesis test was 0.002.What do you conclude?
A. There is not sufficient evidence to conclude that thealternative hypothesis is true because the​ P-value was solarge.
B. There is not sufficient evidence to conclude that thealternative hypothesis is true because the​ P-value was sosmall.
C.There is evidence to conclude that the alternative hypothesisis true because the​ P-value was so large.
D. There is evidence to conclude that the alternative hypothesisis true because the​ P-value was so small.
d) What would you have concluded if the P-value had been0.42?
A.There is evidence to conclude that the alternative hypothesisis true because the​ P-value was so small.
B. There is not sufficient evidence to conclude that thealternative hypothesis is true because the​ P-value was solarge.
C. There is evidence to conclude that the alternative hypothesisis true because the​ P-value was so large.
D.There is not sufficient evidence to conclude that thealternative hypothesis is true because the​ P-value was so
small.