Multiple Births The following data represent the number of live multiple-delivery births (three or more babies) in 2012 for women 15 to 54 years old.
Age: 15-19
Number of Multiple Births:44
Age: 20-24
Number of Multiple Births:404
Age: 25-29
Number of Multiple Births:1204
Age: 30-34
Number of Multiple Births:1872
Age: 35-39
Number of Multiple Births:1000
Age:49-44
Number of Multiple Births:332
Age: 45-54
Number of Multiple Births:63

Source: National Vital Statistics Report

(a) Construct a probability model for number of multiple births.
(b) In the sample space of all multiple births, are multiple births
for 15- to 19-year-old mothers unusual?
(c) In the sample space of all multiple births, are multiple births
for 40- to 44-year-old mothers unusual?

Solution: