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A bank wants to estimate the proportion of people who would sign up for a credit card if it sends a particular mailing advertising the
A bank wants to estimate the proportion of people who would sign up for a credit card if it sends a particular mailing advertising the card. For a trial mailing to 150 potential customers, 13 people accept the offer. Can the bank conclude that fewer than 10% of their population of potential customers would take the credit card? Answer by finding an appropriate 95% confidence interval.
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