4 8 Suppose You Want To Construct A 95 Confidence Interval For The Mean Age That People Have Their Wisdom Teeth Remove 1 (53.2 KiB) Viewed 115 times
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4 8. Suppose you want to construct a 95% confidence interval for the mean age that people have their wisdom teeth removed. If you know that the standard deviation is 1.8 and you want a margin of error of no more than plus or minus 0.2 years, at least how many people must you survey? (15 points)
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