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2.4.2 The Normal distribution (A-level only)

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Question 24

The times it takes students to complete a test are normally distributed with a mean of 58 minutes and a standard deviation of 12 minutes.

Find the time by which 90% of students complete the test.

[2]

Markscheme

2.4.2 The Normal distribution (A-level only) Questions

A Level
Maths
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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