Write down the joint distribution
Assume we flip fair coin four times. Let X = number of heads, Y = 1 if last flip is a tails.
(a) Write down the joint distribution of X and Y .
(b) Find E[X] and E[Y ].
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Assume we flip fair coin four times. Let X = number of heads, Y = 1 if last flip is a tails. Write down the joint distribution of X and Y .
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