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

The GPAs of all students enrolled at a large university have an approximately normal distribution with a mean of 3.02 and a standard deviation of 0.29 . Find the probability that the mean GPA of a random sample of 20 students selected from this university is 2.87 or lower. Round your answer to four decimal places. P ( x ¯ ≤ 2.87 ) =

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orchestra answered 1 year ago

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