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Suppose that in a large class, the instructor announces that the average grade on an exam is 75.Which is more likely to be closer to

Suppose that in a large class, the instructor announces that the average grade on an exam is 75.Which is more likely to be closer to 75:

a.) The exam grade of a randomly selected student in the class?

b.) The mean exam grade of a sample of 10 students?

Explain.

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