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Statistical Distributions

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Question 72

The discrete random variable X∼B(15,0.35)X \sim B(15, 0.35)X∼B(15,0.35)

Find:

a.

the value of r r\,r for which P(X=r)=0.212P(X = r) = 0.212P(X=r)=0.212

[1]
b.

the value of s s\,s for which P(X<s)=0.173P(X < s) = 0.173P(X<s)=0.173

[1]
c.

the value of t t\,t for which P(X≤t)=0.997P(X \leq t) = 0.997P(X≤t)=0.997

[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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