Population of scores forms a normal distribution

Reference no: EM13495922

A population of scores forms a normal distribution with a mean of µ= 40 and a standard deviation of ?= 12.

a. What is the probability of randomly selecting a score less than X = 34?
b. What is the probability of selecting a sample of n 9 scores with a mean less than M = 34?
c. What is the probability of selecting a sample of n 36 scores with a mean less than M = 34?

Reference no: EM13495922

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