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Statistical Distributions

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Question 21

The discrete random variable X∼B(20,0.25)X \sim B(20, 0.25)X∼B(20,0.25)

Find:

a.

P(X=5)P(X = 5)P(X=5)

[1]
b.

P(X<4)P(X \lt 4)P(X<4)

[1]
c.

P(X≤10)P(X \leq 10)P(X≤10)

[1]
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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