Exhibit 11-7
The results of a recent poll on the preference of shoppers regarding two products are shown below.
Product | Shoppers Surveyed | Shoppers Favoring This Product |
A | 800 | 560 |
B | 900 | 612 |
Refer to Exhibit 11-7. The 95% confidence interval estimate for the difference between the populations favoring the products is
◦
-0.024 to 0.064
◦
0.6 to 0.7
◦
0.024 to 0.7
◦
0.02 to 0.3