Question

What is the probability that a randomly selected person from this study tried to quit smoking using a lozenge given that they did not use gum?

Answer 1

From the diagram we get that:

1) The total number of people in the study is 661+106+40+60+239+102+172+86=1466.

2) The total number of people that tried to quit smoking using lozenge given that they did not use gum is 60+172=232.

Therefore, the probability that a randomly selected person from this study tried to quit smoking using a lozenge given that they did not use gum is:

`(232)/(1466)=0.1583.`

Answer: 0.1583 or 15.83%.