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In a random sample of 35 refrigerators, the mean repair cost was $ 136.00 and the population standard deviation is $ 18.
In a random sample of refrigerators, the mean repair cost was $and the population standard deviation is $. Construct a % confidence interval for the population mean repair cost. Interpret the results. Construct a % confidence interval for the population mean repair cost.
The % confidence interval is ?, ?
Interpret you results. Choose the correct answer below.
A.With % confidence, it can be said that the confidence interval contains the true mean repair cost.
B.The confidence interval contains % of the mean repair costs.
C.With % confidence, it can be said that the confidence interval contains the sample mean repair cost.
