Mathematics (AS & A Level) · Oct / Nov 2022 · Paper 51 · Question 1
9709
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The probability distribution table for a random variable X is shown below. x −2 −1 0.5 1 2 PX = x 0.12 p q 0.16 0.3 Given that EX = 0.28, find the value of p and the value of q. [4]
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