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We survey 1004 teens age 13-19, we record whether or not they have had sex education. 817 respond that they have had some form of

We survey 1004 teens age 13-19, we record whether or not they have had sex education. 817 respond that they have had some form of sex education. [6 points]

(a) Construct a 99% confidence interval for teens who have not had sex education.

(b) How many teens would we have to sample in order to cut the margin of error in half?

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