Chapter 10, Problem T10.7SPT

To determine

To find out which of the following options gives the correct outcome of the researcher’s test of the claim.

Answer to Problem T10.7SPT

Option (c) is the correct option.

Explanation of Solution

It is given that the confidence interval is:

  $\left(-0.154,0.138\right)$

Now, we note that the confidence interval contains zero and thus it means that it is very likely that the population proportions are equal and thus we cannot conclude that the population proportions is different. Thus, option (c) is the correct option i.e. because the confidence interval contains zero, the researcher cannot conclude the proportion of iPod owners at the two venues is different.