It is known that IQ of students at a certain elementary school is normally distributed with...

Question

Question

It is known that IQ of students at a certain elementary school is normally distributed
with mean μ = 100 and standard deviation σ = 16.

Calculate the probability that in a random sample of n = 4 students

the observed sample mean is within 10 units of the true population mean.

Answer to four decimal places.

math Statistics-And-Probability

Answer 1

Answer #1

Answer 2

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