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So, roll a fair 6-sided dice once, and if the result is 1,2,3, or 4 then...

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Statistics

So, roll a fair 6-sided dice once, and if the result is 1,2,3,or 4 then toss a fair coin 3 times.

If the first result is 5, 6, then toss a fair coin until twotails show up.

Then, what is the expected value of number of heads?

PLZ help me with this!!!

THX soooooo much!

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