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Let X be the exam grade of a student taking Calculus 1 with Professor Smith. The...

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Basic Math

Let X be the exam grade of a student taking Calculus 1 withProfessor Smith. The professor believes that X has a mean of81 and a standard deviation of22. Suppose there are 100students in Professor Smith's class.

Approximate the probability that X ishigher than 83.6 OR smaller than 79.2?

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