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Construct a 99% confidence interval for the population mean, . Assume the population has a normal distribution. A group of 19 randomly selected employees has

Construct a 99% confidence interval for the population mean, . Assume the population has a normal distribution. A group of 19 randomly selected employees has a mean age of 22.4 years with a standard deviation of 3.8 years. Round to the nearest tenth.

A.(16.3, 26.9)

B.(19.9, 24.9)

C.(17.2, 23.6)

D.(18.7, 24.1)

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