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Mathematics 8 Online
OpenStudy (anonymous):

probability question, help plz?

OpenStudy (anonymous):

OpenStudy (anonymous):

Firstly, do you know how to calculate the probability of >=2 heads, given >=3 tails?

OpenStudy (anonymous):

I would just think of it as flipping 4 coins and hoping for 2 heads. I have to have 3 tails, so I'm left with only 4 chances to get a head, and I need 2 of them or more to work. So calculate P(2) + P(3) + P(4)

OpenStudy (anonymous):

@artofspeed ?

OpenStudy (phi):

This is overkill.

OpenStudy (anonymous):

you are a boss

OpenStudy (anonymous):

Beautiful answer, Phi.

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