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2.4 Statistical sampling

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Question 9

Two simple random samples of 60 passengers are selected on different days. In one sample, 39 passengers rate a service as good. In the other, 32 do so.

a.

Calculate the percentage rating the service as good in each sample.

[2]
b.

Explain what the difference shows about using samples to infer a population opinion.

[1]
Markscheme

2.4 Statistical sampling Questions

  1. A Level
  2. /Maths
  3. /2.4 Statistical sampling

36 exam-style questions on CCEA A Level Maths 2.4 Statistical sampling, covering 2.4.1 Statistical sampling, 2.4.2 Statistical sampling, 2.4.3 Statistical sampling, and 2.4.4 Statistical sampling. Each one has a worked solution and a mark scheme showing where the marks go.

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