SOLUTION: starting salaries of marketing majors are normally distributed with a mean of 42,000 and a standard deviation of 3900. what is the probability that a randomly selected marketing ma

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Question 430954: starting salaries of marketing majors are normally distributed with a mean of 42,000 and a standard deviation of 3900. what is the probability that a randomly selected marketing major will receive a starting salary between 40,000 and 50,000?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

*Note: z+=+blue%28x+-+mu%29%2Fblue%28sigma%29

 z = -2000/3900 = -.5128   and z = 8000/3900 = 2.0513

 P(between 40,000 and 50,000) = P(-.5128 < z < 2.0513) = .6758