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Use the expression in the accompanying discussion of sample size

/in /by

Use the expression in the accompanying discussion of sample size to
find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones. Assume that you want 99​% confidence that your error is no more than .035.

The sample should include _____ men and ____ women.

beside understand the rest of the problem, I’m having problems working the area after the equal sign and before the square root sign.

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confidence interval.JPG
confidence interval.JPG

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