posted by Katie on .
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.
99% = mean ± 2.575 SEm
SEm = SD/√n