Question

Suppose that 55% of all adults regularly consume coffee, 65% regularly consume carbonated soda, and 75% regularly consume at least one of these two products. (a) what is the probability that a randomly selected adult regularly consumes both coffee and soda? (b) what is the probability that a randomly selected adult doesn't regularly consume at least one of these two products?

Answer 1

A. coffee and soda consumes (55%+65)-100%=120%-100%=20%
     P1=20/100=2/10=1/5

b. does not consume at least one of these products= 100-75=25 %
   P2= 25/100=1/4