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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 16

The random variable X X\,X has the distribution X∼B(45,0.16)X \sim B(45, 0.16)X∼B(45,0.16).

a.

Find the mean of XXX.

[1]
b.

Show that the variance of X X\,X is 6.048.

[1]
c.

Find P(X<6)P(X < 6)P(X<6).

[1]
d.

Find P(X≥5)P(X \ge 5)P(X≥5).

[2]
e.

Find P(6≤X≤11)P(6 \le X \le 11)P(6≤X≤11).

[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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