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Asked Apr 7, 2019
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A grading scale is set up for 1000 students test scores. It is assumed that the scores are normally distributed with a mean score of 75 and a standard deviation of 15. What is the probability a student will have a score between 45 and 75

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Calculation:

Let X denote score of a randomly selected student. It is given that X has a normal distribution with parameters, mean µ = 75 and stand...

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