Let x denote mean age of random sample of n 50 students

The average of freshman college students is = 18.5 years, with a standard deviation = 0.4 years.

a. Let x¯ denote the mean age of a random sample of n = 50 students. Determine the mean and standard deviation of the random variable x¯.

b. Repeat part (a) with n = 100.

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