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2.4 N: Statistical distributions

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Question 52

The probability that Harry is late for school on any given day is 0.1, independently of every other day. Harry attends school on 30 days in a term.

a.

Find the probability that Harry is late exactly once.

[1]
b.

Find the probability that Harry is late more than four times.

[1]
c.

Find the probability that Harry is late fewer than three times.

[1]
Markscheme

2.4 N: Statistical distributions Questions

  1. A Level
  2. /Maths
  3. /2.4 N: Statistical distributions

390 exam-style questions on AQA A Level Maths 2.4 N: Statistical distributions, covering 2.4.1 Discrete distributions and the binomial, 2.4.2 The Normal distribution (A-level only), and 2.4.3 Selecting an appropriate distribution (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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