According Mi to a National Business Travel Association (NBTA) 2010 survey, the average salary of a travel

Question:

According Mi to a National Business Travel Association (NBTA) 2010 survey, the average salary of a travel management professional is $96,850. Assume that the standard deviation of such salaries is $30,000. Consider a random sample of 50 travel management professionals and let x represent the mean salary for the sample.
a. What is µ>
b. What is σ?
c. Describe the shape of the sampling of .
d. Find the z-score for the value = 89,500.
e. Find P( > 89,500).
Distribution
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