(Steps Shown) Suppose the grades for midterm 1 have a normal distribution with a mean 65 and St. Deviation 12. What is the probability that the sum of the grades


Question: Suppose the grades for midterm 1 have a normal distribution with a mean 65 and St. Deviation 12.

What is the probability that the sum of the grades of 10 randomly selected students is greater that 678.

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