# Question

The population of IQ scores forms a normal distribution with a mean of µ = 100 and a standard deviation of σ = 15. What is the probability of obtaining a sample mean greater than µ = 97,

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

b. for a random sample of n = 25 people?

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

b. for a random sample of n = 25 people?

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