1. You are a nurse working in a large family health team (FHT) in Toronto. You are interested in the relationship between health risk and income, and you collect data on a large number of community-dwelling clients that are enrolled with the FHT. Some of the data that you collected are shown in the table below. Use these data to answer the questions below the table.

Smoking Status	Income	Total
Low	Medium	High
Smoke	634	332	247	1,213
Don't Smoke	1,846	1,622	1.868	5,336
Total	2,480	1,954	2,115	6,549

What is the probability that a person chosen at random from the study population smokes?

A person chosen at random from the study population has a high income. What is the probability that this person does not smoke?

What is the probability that a person chosen at random from the study population is from the low income group and smokes?

What is the probability that someone chosen at random from the study population is not from the low income group?

What is the probability that someone chosen at random from the study population is from the low income group or from the medium income group?

What is the probability that someone chosen at random from the study population is from the medium income group or smokes?

Is being a smoker independent of having a high income? How do you know?