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In random samples of 425 females and 190 males, 80 of the females and 38 of...

In random samples of 425 females and 190 males, 80 of the females and 38 of the males said they earn more than $85,000 per year. Find a 98% confidence interval for the difference between the proportions of females and males who earn more than $85,000 per year.

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