So the probabilities will be the same, as required. 8 9 a M1 3 M1 for correct construction of probability tree diagram M C1 C1 for probabilities and events identified clearly 0.2 A1 cao A1 P(P, P) = 0.4 × 0.5 = 0.2 3 b 10 P(6, 7 or 8) = × 0.050 M1 2 M1 for multiplication showing probabilities for two M = = A1 draws without replacement 0.049 77… A1 cao 2
So the probabilities will be the same, as required. 8 9 a b P(P, P) = 0.4 × 0.5 = 0.2 0.2 M1 C1 A1 3 M1 for correct construction of probability tree diagram C1 for probabilities and events identified clearly A1 cao M 3 10 P(6, 7 or 8) = × = = 0.049 77… 0.050 M1 A1 2 M1 for multiplication showing probabilities for two draws without replacement A1 cao M 2
Higher_Skills_Probability_MarkScheme_Edexcel.docx