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Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is 128000 dollars.  Assume the population standard deviation is 43000 dollars. Suppose you take a simple random sample of 100 graduates.

Find the probability that a single randomly selected salary is at most 133000 dollars.
Answer =

Find the probability that a sample of size is randomly selected with a mean that is at most 133000 dollars.
Answer =

Enter your answers as numbers accurate to 4 decimal places.

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