Construct a 95% confidence interval for the proportion of customer using the debit cards. Check whether it is reasonable to conclude that more than half of the customers use a debit card. Interpret the results.

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Chapter 9, Problem 1C

To determine

Construct a 95% confidence interval for the proportion of customer using the debit cards.

Check whether it is reasonable to conclude that more than half of the customers use a debit card.

Interpret the results.

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