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Statistical Distributions

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Question 46

A random variable X X\,X has the probability function:

P(X=x)=(2x−1)16x=1,2,3,4 P(X=x) = \frac{(2x-1)}{16} \quad x = 1, 2, 3, 4 P(X=x)=16(2x−1)​x=1,2,3,4
a.

Construct a table giving the probability function of XXX.

[2]
b.

Find P(1.5<X<3.5)P(1.5 < X < 3.5)P(1.5<X<3.5)

[1]
c.

Construct a table for the cumulative distribution F(x)F(x)F(x)

[2]
Markscheme

Statistical Distributions Questions

  1. A Level
  2. /Maths
  3. /Statistical Distributions

215 exam-style questions on Edexcel A Level Maths Statistical Distributions, covering 6.1 Probability Distributions, 6.2 The Binomial Distribution, and 6.3 Cumulative Probabilities. Each one has a worked solution and a mark scheme showing where the marks go.

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