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normal distribution

The amounts of money being requested in applications for home loans in Down River Federal Savings follow the normal Distribution with half of $ 70,000 and a standard deviation of $ 20,000.This morning he received a loan application. What is the likelihood:
a)that the amount requested is $ 80,000 or more.
b)that the amount requested is between $ 65,000 and $ 80,000.
c)that the amount requested is $ 65,000 or more?

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