The amounts of money requested on home loan applications at Down River Federal Savings follow the normal distribution, with a mean of $70,000 and a standard deviation of $20,000. A loan application is received this morning. What is the probability:
a. The amount requested is $80,000 or more?
b. The amount requested is between $65,000 and $80,000
c. The amount requested is less than $65,000?