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Suppose ‘G’ is the grade of gasoline used by all professional drivers on the college team....

Suppose ‘G’ is the grade of gasoline used by all professional drivers on the college team. Suppose G is normally distributed with a mean of 104, but an unknown variance. A random sample of 9 drivers is drawn from this population. What is the probability that the sample average is more than 102 with a sample variance of 9?

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