The following contingency table provides frequencies for the preferred type of exercise for people under the age of 35 and those 35 years of age or older. Here xx and yy represent missing values. 
Determine whether selecting an individual under 35 is independent of selecting an individual who prefers swimming.
Definitions:
Unemployment
The situation where individuals who are capable of working and willing to work are unable to find employment.
Opportunity Cost
The disqualification of possible advantages obtainable from other scenarios when one is embraced.
Motorcycles
Two-wheeled motor vehicles that are often used for transportation, recreation, or sport, known for their maneuverability and speed.
Hybrid Cars
Vehicles powered by a combination of an internal combustion engine and one or more electric motors, using energy stored in batteries.
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