The average monthly mortgage payment including principal and interest is $982 in the United States. If the

Question:

The average monthly mortgage payment including principal and interest is $982 in the United States. If the standard deviation is approximately $180 and the mortgage payments are approximately normally distributed, find the probability that a randomly selected monthly payment is
a. More than $1000 0.4602
b. More than $1475 0.0031
c. Between $800 and $1150