x Turn on thread page Beta
 You are Here: Home >< Maths

# Official Edexcel S3 thread Wednesday 20 May 2015 Morning [6691] watch

1. (Original post by Mutleybm1996)
Is this for A*?
5d was the only really tough question
I started doing 6a wrong, then saw 6b and realised

Posted from TSR Mobile
Yep
2. I GOT THE EXACT SAME THING!!!! Wrote it to 3d.p tho!!!!!!!!!!!!!! I hope this is right answer,
3. (Original post by Gome44)
Forgive me if I'm wrong
I got the same (kind of)!

Here's my worked solution for the U question:
4. (Original post by Gome44)
Ah, fair enough
Two of the people applying for Maths at Cambridge stormed off saying how nasty it was, so that's good news!

Posted from TSR Mobile
5. (Original post by Mutleybm1996)
Two of the people applying for Maths at Cambridge stormed off saying how nasty it was, so that's good news!

Posted from TSR Mobile
Applying or have offers? The former doesn't instill confidence.
6. What would 45 marks roughly be on this paper?

Posted from TSR Mobile
7. (Original post by dhamm)
I got the same (kind of)!

Here's my worked solution for the U question:
ah ha, got it finally. mother of god this is too much to handle
8. (Original post by STATER)
Applying or have offers? The former doesn't instill confidence.
Sorry, have offers
One has an average of 98.2% in Maths
One has an average of 96.4% in Maths

Both expecting A*'s this year, they're both panicking now

Posted from TSR Mobile
9. I really struggled in the question where you had to write a conclusion about Henry's test statistic (it was around 6 IIRC). I think it was the last question - the one about the concentric circles. They'd given us his test statistic but no significance level so I wasn't really sure what to do...? I ended up just using the 1% (or was it 10%? I can't remember!) significance level that they'd used earlier in the question.
10. (Original post by dhamm)
I got the same (kind of)!

Here's my worked solution for the U question:
Damn that looks so easy! Grrrrrr

Posted from TSR Mobile
11. (Original post by dhamm)
I really struggled in the question where you had to write a conclusion about Henry's test statistic (it was around 6 IIRC). I think it was the last question - the one about the concentric circles. They'd given us his test statistic but no significance level so I wasn't really sure what to do...? I ended up just using the 1% (or was it 10%? I can't remember!) significance level that they'd used earlier in the question.
Any significance level (in the table) lead to accepting Henry's conclusion
12. (Original post by llIllIllIllI)
ah ha, got it finally. mother of god this is too much to handle
It was horrible, wasn't it! I went back to it at the end of the paper and luckily had a moment of inspiration to write U-bar as (U1+U2+...)/5.
I didn't really understand why though, in the previous parts I was clutching at straws so just said that the sample of 5 U's may not be independent.

(Original post by Mutleybm1996)
Damn that looks so easy! Grrrrrr
Don't worry about it! Hardly anyone I've spoken to thought to rewrite U-bar like that. It was a very weird question.
13. (Original post by Mutleybm1996)
Sorry, have offers
One has an average of 98.2% in Maths
One has an average of 96.4% in Maths

Both expecting A*'s this year, they're both panicking now

Posted from TSR Mobile
Tbh its possible that they under revised for it since it tends to be straightforward (in the past). Boundaries will certainly fall by a mark or two at least
14. (Original post by dhamm)
It was horrible, wasn't it! I went back to it at the end of the paper and luckily had a moment of inspiration to write U-bar as (U1+U2+...)/5.
I didn't really understand why though, in the previous parts I was clutching at straws so just said that the sample of 5 U's may not be independent.
How did you do on the rest of it?
15. wowowowowowowowowow that was hard! dropped 6 marks on q4, practically all of q5 minus the three for stating the distribution. otherwise it was alright

definitley concerned for my uni offers now!

6 Questions.... U MAD BRUV, *KMT*
16. Like I promised earlier, I am posting the questions from S3. I don't know how useful it is to everyone, but I hope people can come up with an unofficial. And, I must say it is a very tricky paper.
Attached Images

17. (Original post by Gome44)
Any significance level (in the table) lead to accepting Henry's conclusion
Ahhh!!! Thank you. I'm kicking myself now!
(Original post by STATER)
How did you do on the rest of it?
See the photo in one of my earlier posts!
18. (Original post by dhamm)
Ahhh!!! Thank you. I'm kicking myself now!

See the photo in one of my earlier posts!
I meant how did you find the other questions?
19. I got same final answer
20. (Original post by kingmathematica)
Like I promised earlier, I am posting the questions from S3. I don't know how useful it is to everyone, but I hope people can come up with an unofficial. And, I must say it is a very tricky paper.
I'll try and do a quick one now. I've got the numerical answers saved on my calculator so it shouldn't take very long!

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: May 24, 2016
Today on TSR

### Four things top students are doing

Over the Easter break

### Her parents made her dump me

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

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