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# Edexcel S2 - 27th June 2016 AM

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• View Poll Results: How did you find the Edexcel S2 exam?
Very hard
145
14.71%
Hard
331
33.57%
Normal
293
29.72%
Easy
152
15.42%
Very easy
65
6.59%

1. (Original post by bat_man)
haha aww, just one more hard day of work and its all done! (Im assuming this is your last exam), Surprisingly ive been just a little too relaxed this weekend. Went out twice already, lost my motivation . And yeah, my older siblings say, A-Levels are so much easier now, just cuz i got better grades than them at AS.
Yup my last one...finally. The worst feeling is getting your exam timetable and realizing just how much cramming and mental pain there is going to be for the next few weeks. LOL easier. Too bad A levels are getting even harder, with the new syllabus and all. I feel sorry for the younger kids.

(Original post by Mathemagicien)
What about teenagers who say college is easy?
Either geniuses or not putting in any real work
2. (Original post by SeanFM)
If you just stick with X (rather than involving Y) it's just finding the least value of n for which that has been satisfied. Similar to finding the value for a critical region but it has to be the first value that is greater than 0.9.
thank you
3. guys please help i'm never really sure which signs to use for hypothesis testing, like sometimes i use # instead of < or.
In this question i used # because it said whether or not, i want to know why its > and how it'd know for other questions ?
4. hate this module so much; so crap its unreal; wouldn't wish it on my worst enemy
5. Posted from TSR Mobile

Could someone help me go through these questions please?
Attached Images

6. (Original post by alvosm)
in the book it says that we "should be able to derive it from first principles" so i guess it could come up. That would be the only derivative we have to know right?
yeah, i just looked at the spec. Examsolutions does it quite easily.
7. (Original post by кяя)
Yup my last one...finally. The worst feeling is getting your exam timetable and realizing just how much cramming and mental pain there is going to be for the next few weeks. LOL easier. Too bad A levels are getting even harder, with the new syllabus and all. I feel sorry for the younger kids.

Either geniuses or not putting in any real work
I thought it wasnt many exams, but the fact that its spread out over a whole month is kinda annoying, but better than intense cramming. And yh, i saw the spec of the new chemistry, and boy was i glad to be born one year earlier before them.
8. (Original post by bat_man)
I thought it wasnt many exams, but the fact that its spread out over a whole month is kinda annoying, but better than intense cramming. And yh, i saw the spec of the new chemistry, and boy was i glad to be born one year earlier before them.
Even all my teachers seem mad at the new spec. At least it gives some of the lazy teens a kick up the ass
9. Hi All,

What would you say apart from the solomon papers, was the hardest edexcel paper ?

Many thanks,

Will
10. guys please help i'm never really sure which signs to use for hypothesis testing, like sometimes i use # instead of < or.
In this question i used # because it said whether or not, i want to know why its > and how it'd know for other questions ?
11. [QUOTE=Bloom77;66112739]
(Original post by Bloom77)
Attachment 556741

This is what I did so far: Attachment 556743

But how do you know it's not the first function but it's the second one?

Posted from TSR Mobile
I believe you would say that because F(a)=0.892, the max the first function can go is 0.6 which is when x=4. as F(a) is greater than 0.6, you would use the 2nd function. hope this helps
12. Did anyone else find the JUNE 14 R paper hard?
13. Probably a dumb question but your not expected to approximate a Poisson with binomial right? Also does it matter when doing a hypothesis test with a normal distribution whether you work out the probabilities or just use the Z values? Thanks
14. [QUOTE=r3h4f;66114959]
(Original post by Bloom77)

I believe you would say that because F(a)=0.892, the max the first function can go is 0.6 which is when x=4. as F(a) is greater than 0.6, you would use the 2nd function. hope this helps
Omg thank you

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15. (Original post by LikeASomebody)
Probably a dumb question but your not expected to approximate a Poisson with binomial right? Also does it matter when doing a hypothesis test with a normal distribution whether you work out the probabilities or just use the Z values? Thanks

No you don't but dont worry about it,

I think you need to work out the probabilities, but you do need to convert to Z values and look in the normal distribution table ?

If thats what you were asking.

But make sure you add a continuity correction in there , as you are approximating a discrete to a continuos random variable..

Enjoy and hope that helped

Will
16. (Original post by taysc)
Did anyone else find the JUNE 14 R paper hard?
Yep
The last question was particularly difficult
Not sure why the grade boundaries were quite high

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17. which s2 paper is the hardest? i..e has the lowest grade boundaries
18. How do you know the area of a triangle is 0.5 in this question?
For part C

Mark scheme

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19. (Original post by ssd07)
which s2 paper is the hardest? I..e has the lowest grade boundaries
june 14 r
58 a
20. (Original post by Bloom77)
How do you know the area of a triangle is 0.5 in this question?
For part C

Mark scheme

Posted from TSR Mobile
It says the mode of x = the median of x.
The mode/median of x = 3.
Therefore triangle has to be 0.5 as F(m)=0.5

If you need me to explain it more just say

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