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# OCR MEI - S1 - 20th May 2015 watch

1. It's bull**** that OCR MEI would like to see so give them what they want and never cut corners
2. (Original post by jpetersgill)
Nabeel mate

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I'm sorry James... the ganja took me over... I swear all the sweets had hash oil centres anyway? Like who the f**k wants orange or coffee centres when you can have hash oil centres? Every child knows that James. From age 4.20 years onwards, everything changes. The world becomes... more relaxed, and you have a sudden urge to eat food... almost as if you aren't hungry, but you want to keep eating because it tastes good...
3. adrianblazesit - no more trolling Nabeel
4. (Original post by MathsMaestro)
adrianblazesit - no more trolling Nabeel
who even are you? do i know you?
5. (Original post by MathsMaestro)
Last year for S1 the grade boundary for an A was 61/72. This years paper was quite easy so grade boundaries could be high. My guess is 65/72 for an A this year
they've never been higher than 61/72 and that was with last years basic paper that had 10 marks for drawing graphs, id say about 58/72
6. (Original post by Connorbwfc)
It said 'He has to pick more than 2 before he gets one he likes' The only way this can happen is by getting a cherry first and second = 6/20 * 5/19 = 3/38.
Or first second and then third, or first second third and then fourth and so on. What you have done is worked out the probability of him getting exactly two cherries before getting one he likes. The question asks "more than two" not exactly
7. Nabs
8. (Original post by MathsMaestro)
Lol who are you XD
9. (Original post by MathsMaestro)
Nabs?
yoooooo let's go out for a cheeky nandos!... whoever you are.
10. (Original post by Jackddd)
Or first second and then third, or first second third and then fourth and so on. What you have done is worked out the probability of him getting exactly two cherries before getting one he likes. The question asks "more than two" not exactly
Am I missing something, surely by doing that all he is actually doing is the probability of getting two cherries one after the other, that does not imply he gets one he likes afterwards as there aren't thee picks? It must be 6/20*5/19*14/18? Feel free to disprove me.
But I do believe this question will be examined because the question says more than 2, thus it could also be 6/20*5/19*4/18*14/17?
11. (Original post by MathsMaestro)
Is this right for the last question?

1 - [ (14/20 × 13/19 × 12/18) + (6/20 × 14/19 × 13/18) + (6/20 × 5/19 × 14/18) ]

= 0.459649123 = 0.4596 (4 sig figs)
This may be the correct answer. It is essentially P(X>2) = 1 - P(X<=2) = 1 - [P(X=0)+P(X=1)+P(X=2)]. PSC lol woohoo
12. (Original post by MathsMaestro)
This may be the correct answer. It is essentially P(X>2) = 1 - P(X<=2) = 1 - [P(X=0)+P(X=1)+P(X=2)]. PSC lol woohoo
You quoted your own comment, and you replied to yourself that you are right. You ok there, are you on that kush like Ben's children with the chocolates?
13. Did anyone else get for the outliers question that there will be some at the lower end and the upper end? Because 1.5 x 0.3 is 0.45 and - and + 17.9 is 17.45 and 18.35 respectively. So since the ranges are 17.4 for lower and 18.6 for upper there should be outliers at both ends right?

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You quoted your own comment, and you replied to yourself that you are right. You ok there, are you on that kush like Ben's children with the chocolates?
I can't seem to find any other logical way to answer that last question. Do correct me if I'm wrong
15. (Original post by MathsMaestro)
I can't seem to find any other logical way to answer that last question. Do correct me if I'm wrong
Are you ok i.e. not high as a f**king kite, or are you on that kush like Ben's children with the chocolates?
Are you ok i.e. not high as a f**king kite, or are you on that kush like Ben's children with the chocolates?
Dat ganja you were talking about earlier. Yeahhhh
17. (Original post by MathsMaestro)
Dat ganja you were talking about earlier. Yeahhhh
Who are you
18. (Original post by MathsMaestro)
It's bull**** that OCR MEI would like to see so give them what they want and never cut corners
Mate you're just wrong.. Also who the **** are you?

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19. adrianblazesit I've concealed your identity by replacing your full name with 'Nabs' in an earlier post
20. (Original post by jpetersgill)
Mate you're just wrong.. Also who the **** are you?

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Do you have the mark scheme to prove me wrong? I've also said that my answer MAY be correct

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