Chapter 17, Problem 1E

a.

To determine

State the null hypothesis.

Answer to Problem 1E

Null hypothesis:

$H_0:p=0.44$

Explanation of Solution

Calculation:

The study based on the effect of aspirin in the treatment of heart attacks and has the proportion of heart attacks by 44%.

Let p denotes the population parameter and population proportion of heart attacks.

Null hypothesis:

$H_0:p=0.44$

That is, the new drug is not effective than aspirin and reduces the rate of heart attacks by 44%.

b.

To determine

State the alternative hypothesis.

Answer to Problem 1E

Alternative hypothesis:

$H_A:p>0.44$

Explanation of Solution

Calculation:

Alternative hypothesis:

$H_A:p>0.44$

That is, the new drug is more effective than aspirin and reduces the rate of heart attacks by more than 44%.