Question: A study was conducted to estimate costs for accident victims who wore seat belts. twenty selected cases have a distribution that appears to be bell shaped with a mean of $9004 and a SD of $5629.

1. construct \(99 \%\) C.I. for the means of all such costs.
2. if you are a manager of an insurance company that provides lower rates for drivers who wear seat belts, and you want a conservative estimate for a worst case scenario what amount should you use as the possible hospital cost for an accident victim who wears seat belts?

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