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Suppose the average score on a national test is 600, with a standard deviation of 50. If each score is increased by 10, what are the new mean and standard deviation. a. 600, 60 b. 610, 50 c. 610, 55 d. 610, 60 e. 600, 50
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Suppose the average score on a national test is 600, with a standard deviation of 50. If each score...
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