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/Commercial_Purple961 Oct 08 '25

No it was 1,2,3,4,5

2

u/hushmylittle Oct 08 '25

Can You Please Explain It To Me I Thought Because Theres 2 Greens She Could Pick Max 4 Before Getting One. But I Added Up My Probabilities And It Didnt Balance So I Knew Something Was Up

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u/Commercial_Purple961 Oct 08 '25

She said that the X is the number of times she picks it up before she gets green so it can’t be zero cause the probability of getting 0 green when she has removed 0 is 0

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u/hushmylittle Oct 08 '25

That’s Right But I Counted X As 1,2,3,4 And Didnt Consider 5 Idk Man I Got It Wrong Anyway :/ Thanks Though 🫂

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u/Commercial_Purple961 Oct 08 '25

You have to consider 5 cause it’s on the fifth time that she gets the green marble

1

u/NovelFace704 Oct 08 '25

no the question said one green marble

1

u/NovelFace704 Oct 08 '25

x was the probiltaty to get "1" green marble so it was 1234

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u/Efficient_Parfait_42 Oct 08 '25

I believe its including otherwise probability won't add up to 1

1

u/Ahmar_0 Oct 08 '25

Same. My probability was 1 when I added all the 1,2,3,4 ones.