Standard error of the difference between two proportions

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Reference no: EM1314580

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

At 95% confidence, the margin of error is

A. 0.064

B. 0.044

C. 0.0225

D. 52

Reference no: EM1314580

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