Carbon monoxide (CO) in the home is caused by faulty furnaces burning natural gas or heating oil. Concentrations above 35 parts per million (ppm) is considered dangerous. Suppose that a municipal home inspector randomly samples 180 houses around the city and records the age of the furnace and the carbon monoxide concentration during one day in the winter heating season. Conduct a statistical analysis to determine whether the age of the furnace and CO concentrations are related.