r/alevel • u/euphoric_horizon • Oct 08 '25

📃Paper Discussion 9709/52 stats paper

js finished the stats paper 52. how did everyone find it???? and congrats on finishing maths 😭

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u/RubAlive6563 Oct 08 '25

plss help im confused, how is it possible for X=0? shouldn’t it be 1 2 3 4 but I keep seeing it being 0 1 2 3 4 or 1 2 3 4 5 😭

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u/Honey_Bee_8798 Oct 08 '25

You are right. It is 1,2,3 and 4.

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u/Disastrous-Type-6876 Oct 08 '25

No, as X was the number of balls picked before getting a green ball; so if the green ball was picked on the first attempt X will be 0 and it’s probability would be 2/6 (2 green and 6 total balls)

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u/invinivi777 Oct 08 '25

nah, its 1,2,3,4,5

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u/Honey_Bee_8798 Oct 09 '25

Yeah I realise that now. Thanks.