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Arsey's S1 Edexcel Summer 2013 Model Solutions BOTH PAPERS Watch

P([F n W]') means an employee who isn't full time and doesn't walk. So shouldn't it be 75+50 = 125/200?
2. Hi

Concerning the Venn diagram I drew four circles. F,h,c did intersect and below them I drew b which intersected all of the three above. I did put 0s in the areas of intersection between f,h,and c so would I Stoll get the marks

Thanks
3. (Original post by Heizenburg)

P([F n W]') means an employee who isn't full time and doesn't walk. So shouldn't it be 75+50 = 125/200?
It means not the intersection, so its 1 minus the intersection
4. (Original post by Robbie242)
It means not the intersection, so its 1 minus the intersection
Damn it. 9 past papers and that never came up.

Anyway i can only find 3-4 marks that I have lost, so hopefully I should still get an A.
5. (Original post by Heizenburg)
Damn it. 9 past papers and that never came up.

Anyway i can only find 3-4 marks that I have lost, so hopefully I should still get an A.
Lol you will definitely get the A no doubt, and yeah it never came up before! you just had to use the ' and apply it to the situation

I can't compete with Arsey for promptness, but it might be useful for people to see an alternative set of worked answers, with commentary.

I really don't know how Arsey gets hold of the papers so quickly. At my college, the teachers get the hard-copy 3 or 4 days after the exam. Last year, I got a stern summons from the Exams 0fficer when she heard I had been distributing worked answers a day or two after the exam; she was worried that an exam-paper had been smuggled out of the exam-room after the exam and had reached the teachers - which would be a sacking offence for someone, I suspect. I had to explain that the "Edexcel Emporium" website for maths teachers posts the papers the next working day. (The S1 paper has still not been posted, as it is Saturday; I downloaded Arsey's answers and snipped the questions so I could answer them without being influenced by his answers.)

I sometimes think Arsey must have some special arrangement with Edexcel, especially as he seems to refrain from criticising them even when they are being particularly ... shall we say ... individualistic.

I'll probably post M2, M3, M4 and M5 later.

[Attaching the file didn't work; I'll try again.] Ah, the file's too big, but I didn't get any error-message. I'll split it. What a waste of my and your time, and TSR's storage - the combined size of the 5 separate files is far bigger than the original single file!

EDIT 31 MAY - Splitting the files didn't work properly - several pages were missing. Don't bother with the attached files - go here to get the whole thing in one go:

https://app.sugarsync.com/iris/wf/D1...79005673_66703

USE LINK ABOVE, NOT ATTACHMENTS BELOW!

.
Attached Images
7. S1 2013_06 MADPhil 2.pdf (362.7 KB, 211 views)
8. S1 2013_06 MADPhil 1a.pdf (757.1 KB, 155 views)
9. S1 2013_06 MADPhil 1b.pdf (788.6 KB, 128 views)
10. S1 2013_06 MADPhil 3a.pdf (366.2 KB, 128 views)
11. S1 2013_06 MADPhil 3b.pdf (691.8 KB, 132 views)
12. (Original post by Titus20)
People always make lots of silly mistakes on s1, that's standard. the paper itself was very decent, i think the only problem was the venn diagram but people seem to have generally been fine with it. normal distribution and discrete random variables was easy
wouldn't agree with you on that - trawling this thread , theres so many that got the venn diagram wrong and loads at my school messed that one up aswell haha - and a LOT of people didn't finish the exam , although i personally found the Normal distribution the easiest question in the exam ( apart from maybe Q1 and Q2 ) and yeah discrete random variables was fine - took me ****ing ages to work out that 5k = 1 though hahaha , ended up getting 12k + 0.3 = 1 at the start lol
13. (Original post by MAD Phil)

I can't compete with Arsey for promptness, but it might be useful for people to see an alternative set of worked answers, with commentary.

I really don't know how Arsey gets hold of the papers so quickly. At my college, the teachers get the hard-copy 3 or 4 days after the exam. Last year, I got a stern summons from the Exams 0fficer when she heard I had been distributing worked answers a day or two after the exam; she was worried that an exam-paper had been smuggled out of the exam-room after the exam and had reached the teachers - which would be a sacking offence for someone, I suspect. I had to explain that the "Edexcel Emporium" website for maths teachers posts the papers the next working day. (The S1 paper has still not been posted, as it is Saturday; I downloaded Arsey's answers and snipped the questions so I could answer them without being influenced by his answers.)

I sometimes think Arsey must have some special arrangement with Edexcel, especially as he seems to refrain from criticising them even when they are being particularly ... shall we say ... individualistic.

I'll probably post M2, M3, M4 and M5 later.

[Attaching the file didn't work; I'll try again.]
If the file's too big upload it on Mediafire and post the link.
14. (Original post by MAD Phil)
Here goes:
well that was an anti-climax
15. (Original post by 344302)
Cool!! I checked other mark schemes and it doesn't really mention this!!
I did this too!!
Hope we get the marks and Arsey said it okay

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Me too!
16. Worst exam I have ever taken. Really hoping I scraped an A, and I agree about timings, had no time to check and just ended up rushing!
Few questions about where I lost marks, if anyone would be kind enough to answer them ￼ :
3d) - Venn diagram: I drew this out the right way two times. Guess what? I rubbed them both out. Not just faintly either, proper hard like an idiot. Just hoping on them having powerful scanners or something

5e) - F(y) probability distribution: I drew out the table right, but I think I wrote 0.4 instead of 0.2 for the 5 value. How many marks would I lose for this?

6c) - Last normal distribution question - I did what a few people were saying before: I wrote:
P(X<210)-P(X<200) = 0.98
P(z<5/sigma)-P(z<-5/sigma)=0.98
then I converted 0.98 into its z value, so:
5/sigma - -5/sigma = 2.06
5/sigma + 5/sigma = 2.06
5+5=2.06sigma=10
so sigma = 10/2.06=4.85 something.
I still can't see where I went wrong with this one, and how many marks would i get for it?

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17. (Original post by Tit)
Worst exam I have ever taken. Really hoping I scraped an A, and I agree about timings, had no time to check and just ended up rushing!
Few questions about where I lost marks, if anyone would be kind enough to answer them ￼ :
3d) - Venn diagram: I drew this out the right way two times. Guess what? I rubbed them both out. Not just faintly either, proper hard like an idiot. Just hoping on them having powerful scanners or something

5e) - F(y) probability distribution: I drew out the table right, but I think I wrote 0.4 instead of 0.2 for the 5 value. How many marks would I lose for this?

6c) - Last normal distribution question - I did what a few people were saying before: I wrote:
P(X<210)-P(X<200) = 0.98
P(z<5/sigma)-P(z<-5/sigma)=0.98
then I converted 0.98 into its z value, so:
5/sigma - -5/sigma = 2.06
5/sigma + 5/sigma = 2.06
5+5=2.06sigma=10
so sigma = 10/2.06=4.85 something.
I still can't see where I went wrong with this one, and how many marks would i get for it?

Posted from TSR Mobile
i did the exact same as you for the last question
imho i think we may only loose 1 to 2 marks [ i think]
18. (Original post by MAD Phil)
Here goes:
19. (Original post by MAD Phil)

I can't compete with Arsey for promptness, but it might be useful for people to see an alternative set of worked answers, with commentary.

I really don't know how Arsey gets hold of the papers so quickly. At my college, the teachers get the hard-copy 3 or 4 days after the exam. Last year, I got a stern summons from the Exams 0fficer when she heard I had been distributing worked answers a day or two after the exam; she was worried that an exam-paper had been smuggled out of the exam-room after the exam and had reached the teachers - which would be a sacking offence for someone, I suspect. I had to explain that the "Edexcel Emporium" website for maths teachers posts the papers the next working day. (The S1 paper has still not been posted, as it is Saturday; I downloaded Arsey's answers and snipped the questions so I could answer them without being influenced by his answers.)

I sometimes think Arsey must have some special arrangement with Edexcel, especially as he seems to refrain from criticising them even when they are being particularly ... shall we say ... individualistic.

I'll probably post M2, M3, M4 and M5 later.

[Attaching the file didn't work; I'll try again.]
tbh it just depends on the Examination officers at the school at my old school the examination officer there was a right BIt*h she was like the one you have, the school i'm currently at the really don't give a toss, after the exam the department get the unwanted papers and they do model solutions and give them out i had seen/compared my answers at school right after the exam, also in my school sometimes the teachers do the papers with us they say it motivates us , i was going to say Emporium but you stated it and you are correct the Emporium only has the C1 and M1 paper [both uk and international] they also have the condensed ones, lazy gits need to upload the S1 and D1 papers [dont ask me how i know about Emporium i just do]
20. (Original post by TheGoldenRatio)
Sorry, fixed it now.
21. (Original post by Heizenburg)

P([F n W]') means an employee who isn't full time and doesn't walk. So shouldn't it be 75+50 = 125/200?
It doesn't mean that, it is NOT full time AND walks. Think about what that would look like on a Venn. You have to also include full timers who don't walk and walkers who are not full time.

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22. (Original post by MAD Phil)
Sorry, fixed it now.
MAD Phil firstly great solutions like the Notes, secondly im sorry to say your hand writing is atrocious
23. (Original post by TheGoldenRatio)
i did the exact same as you for the last question
imho i think we may only loose 1 to 2 marks [ i think]
I hope so! I still can't figure out why it didnt work though , mathematically it looks sound!

Posted from TSR Mobile
24. (Original post by MAD Phil)

I can't compete with Arsey for promptness, but it might be useful for people to see an alternative set of worked answers, with commentary.

I really don't know how Arsey gets hold of the papers so quickly. At my college, the teachers get the hard-copy 3 or 4 days after the exam. Last year, I got a stern summons from the Exams 0fficer when she heard I had been distributing worked answers a day or two after the exam; she was worried that an exam-paper had been smuggled out of the exam-room after the exam and had reached the teachers - which would be a sacking offence for someone, I suspect. I had to explain that the "Edexcel Emporium" website for maths teachers posts the papers the next working day. (The S1 paper has still not been posted, as it is Saturday; I downloaded Arsey's answers and snipped the questions so I could answer them without being influenced by his answers.)

I sometimes think Arsey must have some special arrangement with Edexcel, especially as he seems to refrain from criticising them even when they are being particularly ... shall we say ... individualistic.

I'll probably post M2, M3, M4 and M5 later.

[Attaching the file didn't work; I'll try again.] Ah, the file's too big, but I didn't get any error-message. I'll split it. What a waste of my and your time, and TSR's storage - the combined size of the 5 separate files is far bigger than the original single file!
Centres are allowed to use papers for internal use once all of their candidates have sat the paper no idea what your exams officer is on about. In the good old days I could go in just before the exam have a good shufty through the paper.

I am no Edexcel mole. I have used pretty much every centre over the years and without question Edexcel are the most professional and offer the most support. GC is a very nice bloke too. That said, I am more than happy to criticise them when merited. I am not sure what you mean by individualistic either.

There is an option in acrobat pro to reduce file sizes btw.

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25. (Original post by TheGoldenRatio)
tbh it just depends on the Examination officers at the school at my old school the examination officer there was a right BIt*h she was like the one you have, the school i'm currently at the really don't give a toss, after the exam the department get the unwanted papers and they do model solutions and give them out i had seen/compared my answers at school right after the exam, also in my school sometimes the teachers do the papers with us they say it motivates us , i was going to say Emporium but you stated it and you are correct the Emporium only has the C1 and M1 paper [both uk and international] they also have the condensed ones, lazy gits need to upload the S1 and D1 papers [dont ask me how i know about Emporium i just do]
Bit harsh. The exam was Friday, GC will upload on Monday (the next working day!)

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