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According to a Natimal Business Travel Association NBTA 2008 survey

According to a Natimal Business Travel Association (NBTA) 2008 survey, the average salary of a travel management professional is $97,300. 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 μx-bar?

b. What is σx-bar?

c. Describe the shape of the sampling distribution of x-bar.

d. Find the z -score for the value x-bar = $89,500.

e. Find P(x-bar > 89,500).

a. What is μx-bar?

b. What is σx-bar?

c. Describe the shape of the sampling distribution of x-bar.

d. Find the z -score for the value x-bar = $89,500.

e. Find P(x-bar > 89,500).

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