What is the probability that a randomly selected person from this study tried to quit smoking using a lozenge given that they also use gum?

What is the probability that a randomly selected person from this study tried to quit smoking using a lozenge given that they also use gum class=

Respuesta :

Answer:

866/733

Step-by-step explanation:

172 divided by the total numbers

i.e 172/239+102+40+106+661+60+172+86

=172/1466

=86/733