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The final exam is worth 200 points with the usual 10% grading scale. Assume that the final exam scores are normally distributed with the mean

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The final exam is worth 200 points with the usual 10% grading scale. Assume that the final exam scores are normally distributed with the mean of 161 points and the standard deviation of 22. Find the probability that a randomly selected final exam earned at least a B. (Hint: N D) A. 0.4801 B. 0.5199 C. 0.0398 D. None

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