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8. (3pts) Suppose a population has a mean of 69 and a standard deviation of 11. What's the probability that a random sample of size

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8. (3pts) Suppose a population has a mean of 69 and a standard deviation of 11. What's the probability that a random sample of size 40 has a sample mean less than or equal to 67? (Use the Central Limit Theorem.)

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