Question

Mr. Johnson has his newspaper delivered every day. He determines the probability the newspaper is on his front porch is 0.64. The rest of the time he finds the newspaper somewhere on his lawn. What is the probability that Mr. Johnson finds his newspaper on his lawn?

Answer 1

Explanation:

Probability of getting the newspaper on his front porch = P(A) = 0.64

Probability of finding the newspaper on his lawn = P(B) =? (We don't know, this is what we have to find.)

Total probability = 1

Formula, P(A) + P(B) = 1

Let's put all values in this formula,

0.64 + P(B) = 1

P(B) = 1 - 0.64

P(B) = 0.36

Thus, the probablity that Mr. Johnson finds his newspaper on his lawn is 0.36 or 36%.