SOLUTION: A recent Gallup poll shows that approximately 50% of Americans drink soda every day. Suppose Alex takes a random sample of four Americans. What is the probability that at least thr

Algebra ->  Probability-and-statistics -> SOLUTION: A recent Gallup poll shows that approximately 50% of Americans drink soda every day. Suppose Alex takes a random sample of four Americans. What is the probability that at least thr      Log On


   

Question 1151214: A recent Gallup poll shows that approximately 50% of Americans drink soda every day. Suppose Alex takes a random sample of four Americans. What is the probability that at least three Americans drink soda every day or at least one American does not drink soda every day?

Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


The conditions

A = "at least three of them drink soda every day"

and

B = "at least one of them does not drink soda every day"

together cover all the possibilities.

So the probability of "A OR B" is 1.