Cambridge IGCSE Statistics practice

Paper 1 structured question: Probability

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Paper

Marks

Topic

Probability

Exam-style question

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Paper 1Statistical Techniques3 marks

Two independent events A and B have probabilities P(A) = 0.5 and P(B) = 0.3.

Description

P(A) = 0.5 P(B) = 0.3 Events A and B are independent.

a
Calculate the probability that both events A and B occur.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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Paper 1Statistical Techniques2 marks

Description

Event A: Drawing a red ball, P(A) = 0.4 Event B: Drawing a blue ball, P(B) = 0.6 Events A and B are mutually exclusive.

a
Calculate the probability of drawing a red or blue ball.
Your answer
Aim for approximately 2 distinct marking points.
[2]