You are Here: Home >< Maths

# Edexcel S2 Exam Paper January 2011 14/01/11 Watch

Announcements
1. Hey, so what's the general consensus? Was it hard/easy? Any ideas as to how the grade boundaries might be?
2. (Original post by malteser12345)
How many marks was question 2 worth? 6 or 7? Do i get marks for X-B(10,0.2) and do not reject H0? In which case i would get 2/6 right?

What did people get for the last 2? For 7c I got 0.478 and for 7d I got 0.467.
I think i got 0.478 for the second last question. Because I remember it was something like 0.47799 so rounded to 4.s.f was that. Do we actually lose marks for rounding it, instead of keeping it as a fraction?
3. Question 1
Attached Images

4. (Original post by snowflakesblues)
I think i got 0.478 for the second last question. Because I remember it was something like 0.47799 so rounded to 4.s.f was that. Do we actually lose marks for rounding it, instead of keeping it as a fraction?
I think that as long as we round to an appropriate degree of accuracy then it should be ok, i.e 3 decimal places. (thats what i did and in the mark schemes its usually awrt 3 d.p). And i used this answer (0.478) and subbed it in for the last question, i didnt use the whole number, i.e. 7 decimal places.

awrt = anything which rounds to...
5. (Original post by cazzy-joe)
Can anyone tell me last question second last and last part??

It was something like find the probability of "such and such" (I can't really remember what). But I remember that f(x) was something like k/6561(8-x^2) or something.
And the last question was given that 3 samples were taken. Find the probability that at least 2 were "the probability of "such and such""...sorry i can't be more specific, but maybe this might jog your memory
6. Question 2, 3 and 4
Attached Images

7. (Original post by malteser12345)
I think that as long as we round to an appropriate degree of accuracy then it should be ok, i.e 3 decimal places. (thats what i did and in the mark schemes its usually awrt 3 d.p). And i used this answer (0.478) and subbed it in for the last question, i didnt use the whole number, i.e. 7 decimal places.

awrt = anything which rounds to...
Yes, I did that to. Fingers crossed they're not too fussy xD
8. (Original post by malteser12345)
How many marks was question 2 worth? 6 or 7? Do i get marks for X-B(10,0.2) and do not reject H0? In which case i would get 2/6 right?

What did people get for the last 2? For 7c I got 0.478 and for 7d I got 0.467.
It was out of 6, so you should get 2/6 if you wrote what you said. For 7c/d I got similar to those numbers.

(Original post by bluecrimson)
ignoring the changws to the grade boundaries

what are the percentages for
A
B
C
D
E
In theory:
A-80%
B-70%
C-60%
D-50%
E-40%
9. i think it was crazily hard!!!!!!!!!!!!!!!!! i was aiming for an A* but now im praying for an A...i think the grade boundaries willl go down...
10. (Original post by Geniusmiss)
i think it was crazily hard!!!!!!!!!!!!!!!!! i was aiming for an A* but now im praying for an A...i think the grade boundaries willl go down...can someone please explain the teacher one properly?
Glad to know someone's on the same boat as me Was aiming for an A* to
11. (Original post by snowflakesblues)
Glad to know someone's on the same boat as me Was aiming for an A* to
yeah and this was really important test for me cuz i taught myself S2 and this was my chance to prove to my parents that i can work and i will need a A* for uni admission
12. (Original post by Geniusmiss)
yeah and this was really important test for me cuz i taught myself S2 and this was my chance to prove to my parents that i can work and i will need a A* for uni admission
Maybe if it was relatively hard, the grade boundaries might be low
Awww bless where have you applied? Did you need to get an A* for FM? that's tough...O_O..I'm only hoping that i'll get an A* for this one..so that when it comes to S3,M3..and FP2 I wouldn't need to worry so much about getting an A...
13. Question 5 (just had to pause for lunch!)
Attached Images

14. (Original post by snowflakesblues)
Maybe if it was relatively hard, the grade boundaries might be low
Awww bless where have you applied? Did you need to get an A* for FM? that's tough...O_O..I'm only hoping that i'll get an A* for this one..so that when it comes to S3,M3..and FP2 I wouldn't need to worry so much about getting an A...
i needed it for any maths...since im gonna take both math and further math a level...i wanna apply to oxford...im only 15 though....
15. (Original post by Gibbo81)
Question 5 (just had to pause for lunch!)

LOL, Wheyyyyy so far I'm liking your answers as they're almost identical to mine

If you don't mind me asking, how'd you get the papers? Are you a teacher ?
16. (Original post by t_star)
Could you help me out again sorry! I'm having trouble finding D1 Solomon papers on the xtremepapers site?
http://www.xtremepapers.net/Edexcel/...ed/D1/Solomon/ here u go
17. (Original post by Geniusmiss)
i needed it for any maths...since im gonna take both math and further math a level...i wanna apply to oxford...im only 15 though....
I'm 18 my dear, I think you'll be fine when the time comes xD
18. thank you!!! :d
19. Q6
Attached Images

20. Q7
All done.
Any comments or corrections let me know.
Attached Images

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 11, 2011
Today on TSR

### Things NOT to do at uni

Have you done any of these?

### How much revision have yr12s done?

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

Can you help? Study help unanswered threadsStudy Help rules and posting guidelinesLaTex guide for writing equations on TSR

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.