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Mathematics 18 Online
OpenStudy (anonymous):

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?

OpenStudy (anonymous):

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

OpenStudy (anonymous):

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

OpenStudy (anonymous):

i tried and got 1.00

OpenStudy (anonymous):

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

OpenStudy (anonymous):

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

OpenStudy (anonymous):

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

OpenStudy (anonymous):

so im right

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