Question 765561: Suppose that 47% of all Americans have flown in an airplane at least once and that 28% of all Americans have ridden on a train at least once. What is the probability that a randomly selected Americans has either ridden on a train or flown in an airplane? Can this problem be solved? Under what conditions can it be solved? If the problem cannot be solved, What information is needed to make it solvable?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Suppose that 47% of all Americans have flown in an airplane at least once and that 28% of all Americans have ridden on a train at least once.
What is the probability that a randomly selected Americans has either ridden on a train or flown in an airplane?
Can this problem be solved?
Ans: Only if you assume that no one who flew also rode on a train.
--------------------------------------------------
Under what conditions can it be solved?
If no one who flew, rode on a train.
-----------
If the problem cannot be solved, What information is needed to make it solvable?
Aswered above.
Cheers,
Stan H.
============
|
|
|
