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25.01.2020 •
Mathematics
Let (x1, x2, x3, x4) be multinomial(n, 4, 1/6, 1/3, 1/8, 3/8). derive the joint mass function of the pair (x3, x4). you should be able to do this with almost no computation.
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Ответ:
The random variables in this case are discrete since they have a Multinomial distribution.
The probability mass function for a discrete random variable X is given by:
Where are
are possible values of X.
The joint probability mass function of two discrete random variables X and Y is defined as
P(x,y) =P(X=x,Y=y).
It follows that, The joint probability mass function of
is :
Ответ:
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