(a)[3]
Construct the probability distribution table for $X$.
(b)[3]
Calculate the value of $\mathrm{Var}(X)$.
Mathematics 9709 · AS & A Level · Discrete random variables
Discrete random variables — practice question
A fair coin and a fair ordinary six-sided die are tossed together. The random variable $X$ is defined like this: when the coin lands tails, $X$ is double the die score; when the coin lands heads, $X$ equals the die score if it is even, and $X$ is $0$ otherwise.
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