On any given day, there is a 30% chance that Jenny will wear jeans. If she wears jeans, there is a 60% chance that she will wear a t-shirt.

A) determine the probability that Jenny wears jeans and a t-shirt on any given day.
B)determine the probability that Jenny wears jeans but not a t-shirt on a given day.

Two step experiment:

multiply the probability of each step.

A.
P(Jeans,t-shirt)=0.3*0.6=0.18

B.
P(jeans, ~t-shirt)=0.3*(1-0.6)=0.12