Question

You win $4 if you flip a coin twice and get tails both times. For any other outcome you get nothing. What is the expected value?

Answer 1

Try to work this using the method I gave you on the other problem and tell me what you come up with.

Answer 2

the method you gave me on the other one gave me the wrong answer because 1.75 was not an answer choice

Answer 3

i tried and got 1.00

Answer 4

expected value is amount you win times probability you win it.

Answer 5

you win $4 with probability
\[\frac{1}{4}\] so expected value is 1

Answer 6

@Satellite, can you check the other one and see if my math is screwy somewhere?

Answer 7

so im right