The population of IQ scores forms a normal distribution with a mean of 100 and a standard deviation of 15 What is the probability of obtaining a sample mean greater than 97, a for a random sample of n 9 people b for a random sample of n 25 people ...

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

Question:

The population of IQ scores forms a normal 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?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...