Suppose that 55% of all adults regularly consume coffee, 45% regularly consume carbonated soda, and 70% 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: Step 1: Suppose that 55% of all adults regularly consume coffee, 45% regularly consume carbonated soda, and 70% regularly consume at least one of these two products. Here, 55% of all adults regularly consume coffee can be written as 0.55. 45% regularly consume carbonated soda is 0.45. and 70% regularly consume at least one of these two products is C S = 0.7.