Suppose the ages of multiple-birth mothers ( 3 or more babies are normally distributed with a mean age of 31.7 years and a standard deviation of 5.2 years.
a. What percent of these mothers are between the ages 30 to 35?
b. What percent of these mothers are less than 30 years old?
What percent of these mothers are more than 33 years old?
C. What percent of these mothers are more than 33 years old?