Exhibit 11-7
the Results of a Recent Poll on the Preference

Multiple Choice

Exhibit 11-7
The results of a recent poll on the preference of shoppers regarding two products are shown below.
$$\begin{array}{l}&&\text { Shoppers Favoring }\\\text { Product } & \text { Shoppers Surveyed } & \text { This Product } \\\text { A } & 800 & 560 \\\text { B } & 900 & 612\end{array}$$
-Refer to Exhibit 11-7. The 95% confidence interval estimate for the difference between the populations favoring the products is

A) -0.024 to 0.064
B) 0.6 to 0.7
C) 0.024 to 0.7
D) 0.02 to 0.3