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The automaker Dodge needs to estimate the average repair cost associated with crash-testing the Dodge Viper. They would like to estimate the true average with
The automaker Dodge needs to estimate the average repair cost associated with crash-testing the Dodge Viper. They would like to estimate the true average with 95% confidence and a margin of error of $8,000. How many Vipers will they need to crash test the estimate the true average and meet their specifications? (The standard deviation for repair code is estimate to be $11,580).
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