SOLUTION: 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 randoml

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.
============

RELATED QUESTIONS
In a class of 40 students, 17 have ridden an airplane; 28 have ridden a boat; 10 have... (answered by richwmiller,dkppathak)

In a class of 40 students, 17 have ridden an airplane, 28 have ridden a boat, 10 have... (answered by richwmiller)

QUESTION TIME!~ in a class of 40 students, 17 have ridden an airplane 28 have ridden a (answered by psbhowmick)

Out of 40 students, 17 have ridden a n airplane, 28 have ridden a boat, 10 havevridden a... (answered by addingup)

On a survey on entertainment activities, 322 of 2,023 adult Americans surveyed report... (answered by rothauserc)

In a class of 40 students, 17 have ridden an airplane, 28 have ridden a boat, 10 have... (answered by Edwin McCravy)

16% of all Americans live in poverty. If 47 Americans are randomly selected, find the... (answered by Boreal)

An article published in the Washington Post claims that 45 percent of all Americans have... (answered by Boreal)

69% of all Americans are home owners. If 37 Americans are randomly selected, find the... (answered by CPhill,ikleyn)