The mean annual salary for intermediate level life insurance underwriters is about $61,000. A random sample of

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The mean annual salary for intermediate level life insurance underwriters is about $61,000. A random sample of 45 intermediate level life insurance underwriters is selected. What is the probability that the mean annual salary of the sample is 

(a) Less than $60,000 and 

(b) More than $63,000? Assume σ = $11,000


Find the indicated probabilities and interpret the results.

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