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Probability problems based on Z score

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At a large university, 500 freshmen take their final exam for their marketing course. Scores are normally distributed with a mean 79 and standard deviation 7. What is the probability of a score, X, falling between 73 and 83?

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This solution gives the step by step method for computing probabilities based on Z score.

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Probability between a score falling between 73 and 83?
At a large university, 500 freshmen take their final exam ...

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