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The incoming freshman class at North Carolina State University had a mean unweighted GPA of 3.81 with a standard deviation of 0.36.These GPAs are normally

The incoming freshman class at North Carolina State University had a mean unweighted GPA of 3.81 with a standard deviation of 0.36.These GPAs are normally distributed.

a) Find the probability that a randomly selected freshman has an unweighted GPA between 3.75 and 3.95.

b) Find the probability that an SRS of 100 freshmen has a mean unweighted GPA between 3.75 and 3.95.

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