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ZIMSEC A-Level Statistics

6.3Probability

Probability in ZIMSEC A-Level Statistics: what the syllabus expects you to know, the learning objectives and how to practise.
Topic64 practice questions3 lessons

In this topic

Lessons

  • Conditional probability, independence and tree diagrams

    50 min

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  • Probability: sample spaces, events and the addition rule

    45 min

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  • Bayes' theorem

    45 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Probability: sample question

1 mark

A bakery in Gweru bakes 65% of its loaves in oven P and the rest in oven Q. 4% of loaves from oven P and 9% of loaves from oven Q are burnt. Find the probability that a loaf chosen at random is burnt.

Only if the answer has a unit, e.g. cm or km/h.

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