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30 randomly selected cans of Coke are measured for the amount of cola in ounces. The sample values have a mean of 12.18 ounces and a standard deviation of 0.118 ounces.

The 99% confidence interval is ( ounces, ounces). Round each result to two decimal places.

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  1. 99% = mean ± 2.575 SEm

    SEm = SD/√n

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