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2.4.1 Discrete distributions and the binomial

2.4.1 Discrete distributions and the binomial

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Question 2

The random variable X X\,X has the distribution X∼B(n,p)X \sim B(n, p)X∼B(n,p). The mean of X X\,X is 12 and the variance of X X\,X is 8.4.

a.

Show that p=0.3p = 0.3p=0.3 and find the value of nnn.

[3]
b.

Find P(X≤10)P(X \le 10)P(X≤10).

[2]
c.

Find P(X=12)P(X = 12)P(X=12).

[1]
Markscheme

2.4.1 Discrete distributions and the binomial Questions

  1. A Level
  2. /Maths
  3. /2.4.1 Discrete distributions and the binomial

39 exam-style questions on AQA A Level Maths 2.4.1 Discrete distributions and the binomial. Each one has a worked solution and a mark scheme showing where the marks go.

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