chapter 4. #6

[hey3hey]

The mean starting salary offered to graduating students with a certain major in a recent year was $64,215, with a standard deviation of $3712. A random sample of 75 of that year's graduating students with the major has been selected. What is the probability that the mean starting salary offered to these 75 students was $65,000 or less? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.

 

[Deleted member 4993]

The mean starting salary offered to graduating students with a certain major in a recent year was $64,215, with a standard deviation of $3712. A random sample of 75 of that year's graduating students with the major has been selected. What is the probability that the mean starting salary offered to these 75 students was $65,000 or less? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.

Have you been taught to use z-normal distribution?

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