Mathematics (AS & A Level) · Oct / Nov 2020 · Paper 51 · Question 4
9709
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The random variable X takes each of the values 1, 2, 3, 4 with probability 1 4. Two independent values of X are chosen at random. If the two values of X are the same, the random variable Y takes that value. Otherwise, the value of Y is the larger value of X minus the smaller value of X.
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4(a)[4]
4(b)[2]
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