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John and Sarah are in a history class. At the end of the semester, after 5 exams, Josh has a mean of 50 and standard

John and Sarah are in a history class. At the end of the semester, after 5 exams, Josh has a mean of 50 and standard deviation of 10 for exams. Sarah has a mean of 50 and a standard deviation of 3 for exams.

For which student can you more accurately predict the next test score, and why?

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