1. The grade of a Math Quiz is normally distributed with its mean, 81 and standard...

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1. The grade of a Math Quiz is normally distributed with its mean, 81 and standard...

1. The grade of a Math Quiz is normally distributed with its mean, 81 and standard deviation, 8.4. If a student is randomly selected in class, what is the probability that his or her score will be higher than 90?

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1. The grade of a Math Quiz is normally distributed with its mean, 81 and standard...

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