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A new drug Selttiks is proposed to treat sadness. Doctors are worried it also causes nausea....

A new drug Selttiks is proposed to treat sadness. Doctors are worried it also causes nausea. The proportion of 490 people who got sick while taking Selttiks was 18%. The proportion of 680 people who got sick while taking a placebo was 14.7%. Find a 86% confidence interval for the difference in the proportions that get sick with Selttiks vs the placebo

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