Asked Oct 27, 2019

The GPA's of all students enrolled at a large university have an appromimately 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 2.89 or lower. 


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It is given that the GPA of students enrolled at university is normally distributed with mean 3.02 and standard deviation is 0.29....


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0.29 20 = 0.06486


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