(a)[3]
Construct the probability distribution table for $X$.
(b)[3]
Find the value of $\mathrm{Var}(X)$.
Mathematics 9709 · AS & A Level · Discrete random variables
Discrete random variables — practice question
One fair spinner has edges labelled $0, 1, 2, 2$. A second fair spinner has edges labelled $-1, 0, 1$. Both spinners are spun once. For each spinner, the number on the edge where it stops is recorded. The random variable $X$ represents the total of the two numbers.
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