Posted by **Renita** on Friday, February 3, 2012 at 2:30pm.

Assume that the sample is taken from a large population and the correction factor can be ignored.

The average teacher's salary is $43152. Suppose that the distribution is normal with standard deviation equal to $7000. If we sample 100 teachers' salaries, what is the probability that the sample mean is less than $42249?

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