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3. The mean score on a GMAT exam is 62 with the scores normally distributed. The probability of a score between 42 and 47 is

3. The mean score on a GMAT exam is 62 with the scores normally distributed. The probability of a score between 42 and 47 is 3.21% and the probability of a score greater than 77 is 9.87%. What is the probability of a score between 42 and 77?

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