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how do you solve? 13. Suppose test scores (X) have a normal distribution with mean 70 and standard deviation 5. a. If you sample one

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13. Suppose test scores (X) have a normal distribution with mean 70 and standard deviation 5. a. If you sample one test score at random, what is the chance that it will be less than 65? b. If you sample 36 test scores at random, what is the chanced that the average will be less than 65

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