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The GPAs of all students enrolled at a large university have an approximately normal distribution with a mean of3.02 and a standard deviation of0.29. Find

The GPAs of all students enrolled at a large university have an approximately normal distribution with a mean of3.02

and a standard deviation of0.29. Find the probability that the mean GPA of a random sample of20 students selected from this university is2.88

or lower. Round your answer to four decimal places.

P(x2.88)=

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