The population of IQ scores forms a normal distribution with a mean of u=100 and a standard deviatio


Question: The population of IQ scores forms a normal distribution with a mean of u=100 and a standard deviation of 0=15. What is the probability of obtaining a sample mean greater than M=105:

a. for a random sample of n=9 people?

b. for a random sample of n=36 people?

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