Chapter 9.2, Problem 9.25E

To determine

To find null and alternative hypotheses.

Answer to Problem 9.25E

  $\begin{array}{l}{H}_0:p=0.72\\ H_a:p\ne 0.72\end{array}$

Explanation of Solution

Given:

The claim is 72% of teens said they rarely or never argue with their friends.

The claim can be either in null or alternative hypothesis. Therefore, in this case, the null and alternative hypotheses:

  $\begin{array}{l}{H}_0:p=0.72\\ H_a:p\ne 0.72\end{array}$