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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

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 700 420
B 800 456

The 95% confidence interval estimate for the difference between the populations favoring the products (Product A - Product B) is _____.

a. -0.020 to 0.080
b. 0.50 to 0.60
c. 0.020 to 0.60
d. 0.03 to 0.40

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