Information from the Department of Motor Vehicles indicates that the average age of licensed drivers is µ = 45.7 years with a standard deviation of o = 12.5 years. Assuming that the distribution of drivers ages is approximately normal
a. What proportion of licensed drivers are more than 55 years old? (rounded to 4 digits after the decimal)
b. What proportion of licensed drivers are less than 26 years old? (rounded to 4 digits after the decimal)