Chapter 10.1, Problem 3.2CYU

To determine

To interpret: The confidence interval and mention the additional information that is provided by the confidence interval.

Explanation of Solution

Given:

The output is:

From the above output, the 95% confidence interval for difference in population proportions is $\left(0.0333680,0.347383\right)$ . It implies that there are 95% chances that the difference in population proportion lies between 0.0333680 and 0.347383.

Here, 0 does not lie in the computed confidence interval. Thus, it could be said that there is a difference in two population proportions.