Mathematics S1,S2,S3 WST01: Discrete Distributions Topical Past Paper Questions
Edexcel A Level Mathematics S1,S2,S3 (WST01) past-paper questions on Discrete Distributions, free. This topic is regularly examined across 12 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
The random variable $X$ has a discrete uniform distribution where $$ \mathrm{P}(X=x)=\frac{1}{5}\qquad\text{for}x=1,2,3,4,5 $$ (a) Find $ P(X+2 (2) (b) Find $\mathrm{E}(X^{2})$ (2) Given that $ E(aX + 5) = 6 $ where a is a constant, (c) find the value of $ \operatorname{Var}(3 -…
The discrete random variable R has the distribution $ R \sim \mathrm{B}(n, p) $ The mean of R is 200 (a) State the variance of R in terms of p (1) A normal distribution is used as an approximation for $R$ Using this approximation, P($R (5) (c) Hence find the value of $p$, giving…
A bag contains a large number of counters with an odd number or an even number written on each. Odd and even numbered counters occur in the ratio 4 : 1 In a game a player takes a random sample of 4 counters from the bag. The player scores 5 points for each counter taken that has…
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