Sampling Distribution of a Normal Variable

sample of n = 36 randomly selected individuals is less than 30 years is P (X < 30) = P Z < 30 − 27 2 = P (Z < 1.5) = 0.9332. In this population, the probability that the average age of 36 random people is under 30 years old, is much greater than the probability that the age of random one person is under 30 years old. Exercise: Compare the two ................
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