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(8 points) A stud};r involving stress is done on a college campus among the students. The stress score of each student are independent and identically

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(8 points) A stud};r involving stress is done on a college campus among the students. The stress score of each student are independent and identically random variables, with mean 3 and variance 1. Use central limit theorem to nd the approximate probability that the average stress score for the 75 students is less than 3.2

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