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A study was conducted to estimate hospital costs for accident victims who wore seat belts. Twenty-one randomly selected cases have a distribution that '6 appears

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A study was conducted to estimate hospital costs for accident victims who wore seat belts. Twenty-one randomly selected cases have a distribution that '6 appears to be approximately bell shaped with a mean of $9743 and a standard deviation of $5579. Complete parts (a) and (b). {E a. Construct the 95% condence interval for the mean of all such costs. $D

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