Chapter 9, Problem 1PT

To determine

To find: The hypothesis that commentator believes that more than half of adults favour such a ban

Answer to Problem 1PT

The answer is $(b)H_0:p=0.5;H_a:p>0.5$

Explanation of Solution

Given information:

An opinion poll on random sample of adults in favour banning ownerships of handguns by private citizens.

Proportion of adult’s favours such a ban is more than half.

  $p=0.5$

Let $p$ . denote the proportion of adults who favour the ban.

So $p=0.5$

since the commentator believes that more than half of adult’s favour such a ban, the hypotheses

are

  $H_0:p=0.5$

  $H_a:p>0.5$

So the answer is $(b)H_0:p=0.5;H_a:p>0.5$