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Exam grades: Scores on a statistics final in a large class were normally distributed with a mean of 73 and a standard deviation of 8.

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Exam grades: Scores on a statistics final in a large class were normally distributed with a mean of 73 and a standard deviation of 8. Use the TI-84 PLUS calculator to answer the following. Round the answers to at least four decimal places. (a) What proportion of the scores were above 88? (b) What proportion of the scores were below 62? (c) What is the probability that a randomly chosen score is between 65 and 80

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