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[See Solution] The population of IQ scores forms a normal dist. with a mean of u=100 and a standard deviation of σ =15. What is the probability of obtaining

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

for a random sample of n =9 people?
for a random sample of n =36 people?

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[See Solution] The population of IQ scores forms a normal dist. with a mean of u=100 and a standard deviation of σ =15. What is the probability of obtaining

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