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2.4.2 The Normal distribution (A-level only)

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Question 130

An urban transport survey finds that 22% of commuters in a specific metropolitan area utilize a bike-sharing application for their daily travel.

a.

A random sample of 45 commuters is selected. Determine the probability that at most 8 of these commuters utilize the bike-sharing application.

[3]
b.

A second, larger random sample of 250 commuters is selected. Using a normal approximation, estimate the probability that the number of commuters in this sample who utilize the bike-sharing application is fewer than 50.

[4]
Markscheme

2.4.2 The Normal distribution (A-level only) Questions

  1. A Level
  2. /Maths
  3. /2.4.2 The Normal distribution (A-level only)

351 exam-style questions on AQA A Level Maths 2.4.2 The Normal distribution (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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