O-LevelMathematicsProbability4024/11 · May/June 2020 · Q143 Marks

In a survey, some students were asked about their favourite type of music. They could choose Classical, Folk, Reggae or Rock. The following relative frequencies were calculated from the results. Type of music: Classical, Folk, Reggae, Rock Relative frequency: 0.15, 0.22, _, 0.39 300 students took part in this survey. Calculate the number of students who chose Reggae.

Mark scheme

Marking points from the official mark scheme (May/June 2020). The mark or mark type is shown in brackets.

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Topic: Probability, O-Level Mathematics (syllabus 4024). Structured question, 3 marks.
Source: O-Level Mathematics, May/June 2020 Paper 1 Variant 1, question 14.

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