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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 8

The discrete random variable X X\,X has the probability distribution given in the table below, where a a\,a is a constant.

xxx0123
P(X=x)P(X = x)P(X=x)0.20.30.25aaa
a.

Find the value of aaa.

[1]
b.

Find P(X>1.2)P(X > 1.2)P(X>1.2).

[1]
c.

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

[2]
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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