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Suppose that credit scores of a certain group of home owners are normally distributed with a mean of 730 and a standard deviation of 40.

Suppose that credit scores of a certain group of home owners are normally distributed with a mean of 730 and a standard deviation of 40. Find the probability that a randomly chosen home owner in this group has a credit score (a) Above 730 (b) Above 810 (c) Below 770

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