What is the probability that a randomly selected teachers

The average teacher's salary in Noth Dakota in $37,764. Assume a normal distribution with a population standard devation = $5100.

a.) What is the probability that a randomly selected teacher's salary is greater than $45,000?

B.) For a sample of 75 teachers, what is the probability that the sample mean is greater than $38,000?

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What is the probability that a randomly selected teachers : the average teachers salary in noth dakota in 37764. assume a normal distribution with a population standard devation

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