A-Level
EDEXCEL
Mathematics & Further Mathematics
January 2020
QP-202001-Mathematics-US1 · Question 1
Question (excerpt):
2 1. The discrete random variable X has the following probability distribution x –2 –1 1 3 4 P(X = x) 0.15 a b c 0.15 where a, b and c are probabilities. The mean value of X is 1 and F(1) = 0.63 Find …
2 1. The discrete random variable X has the following probability distribution x –2 –1 1 3 4 P(X = x) 0.15 a b c 0.15 where a, b and c are probabilities. The mean value of X is 1 and F(1) = 0.63 Find …
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