Mathematics 9709 · AS & A Level · Sampling and estimation

Sampling and estimation — practice question

Ashok owns 3 green pens and 7 red pens. His friend Rod selects 3 of the pens at random, without replacement.
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Construct a probability distribution table for the number of green pens Rod selects.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Working out probabilities $P(0), P(1), P(2), P(3)” …

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