find the probability that the average weight of a student from the drawn sample will be less than 70 pounds.
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A school district is assumed to have 8,000 5th graders. The average weight of a 5th grader is 75 pounds, with a standard deviation of 20 pounds. If a random sample of 50 students is drawn, find the probability that the average weight of a student from the drawn sample will be less than 70 pounds.
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