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There are 3 coins in a box. One is a two-headed coin,
Chapter 3, Problem 43P(choose chapter or problem)
Problem 43P
There are 3 coins in a box. One is a two-headed coin, another is a fair coin, and the third is a biased coin that comes up heads 75 percent of the time. When one of the 3 coins is selected at random and flipped, it shows heads. What is the probability that it was the two-headed coin?
Questions & Answers
QUESTION:
Problem 43P
There are 3 coins in a box. One is a two-headed coin, another is a fair coin, and the third is a biased coin that comes up heads 75 percent of the time. When one of the 3 coins is selected at random and flipped, it shows heads. What is the probability that it was the two-headed coin?
ANSWER:
Solution
Step 1 of 1
We have to find the probability of getting 2 headed coin when we flip 3 coins
Let H be the event that the coin shows head
All the 3 coins having the equal probability of selecting it them
Then P(A)=1/3
Let A be the 2 headed coin flipped then P(H/A)=1
Let B be the fair coin flipped, then P(H/B)=0.5