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The mean grade point average of the Sigma Mu sorority at a large university is normally distributed with a mean of 3.1 and a standard

The mean grade point average of the Sigma Mu sorority at a large university is normally distributed with a mean of 3.1 and a standard deviation of 0.35.In a group of 28 sorority sisters, what is the probability that the average grade point average is higher than 2.95?

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