====== Programming Exercise 4 ======

Implement [[http://www.cse.yorku.ca/~aeckford/1030/pex04/|this]] API.  Include Javadoc.  You can re-use your Person class from previous labs.

Write a tester that creates a group named "My Neighbors" with three people: Jane Smith (age 41), Wei Yu (age 26), and Abdul Omar (age 14).  Demonstrate that your methods work properly, in particular the averageAge method (correct answer: 27).