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Suppose students ageas follow a skewed right distribution with a mean of 25 years old and...

Suppose students ageas follow a skewed right distribution with a mean of 25 years old and a standard deviation of 15 years. consider the random sample of 100 students.

Determine the probability that the sample mean student age is greater than 22 years?
Math   Statistics-And-Probability   
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Answer #1

Refer Standard normal table/Z-table to find the probability or use excel formula "=NORM.S.DIST(-2, TRUE)" to find the probability.

The probability that the sample mean student age is greater than 22 years is

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