[Hodan]

the bread buns and burgers was 5 and 3 i think

[Elitist]

(Original post by Hodan)
the bread buns and burgers was 5 and 3 i think

;w00t;

[Papaya]

(Original post by Princess)
;yes;

But I didn't cancel it down. Will I lose marks... I didn't think cancelling down mattered in probability.

I got 168/343 = 24/49

[x-minnie moose -x]

for the buns and burgers i got 3 and 5 too
cant remember which way round it was lol

[Papaya]

48/343 + 36/343 + 48/343 + 36/343, or something like thta

[Nintendus]

(Original post by x-minnie moose -x)
for the buns and burgers i got 3 and 5 too
cant remember which way round it was lol

I can't actually remember the numbers i got, but they both equalled 120.

[Elitist]

(Original post by Daniel77)
48/343 + 36/343 + 48/343 + 36/343, or something like thta

I didn't get that ;no;

I got the same as hbk- 252 or something.

[silver_j]

(Original post by Daniel77)
48/343 + 36/343 + 48/343 + 36/343, or something like thta

You missed a set of 36 and 48 (if that makes sense). So it was around 252/342 or something like that

[Papaya]

I done the tree diagram, the person done 3 picks.
You could of had:
B B G
B G G
G G B
G B B

[i'm no superman]

(Original post by Daniel77)
48/343 + 36/343 + 48/343 + 36/343, or something like thta

I had 6 fractions to add up that gave the probability of 2 exact colours and 1 different one...that added up to 243/343 for me...

Guys for the proportion one, did everyone get T=25x?

Oh and what where the upper bounds and lower bounds that you got?
...Oh and anyone remember that question on average speed?

[sim2fresh]

yes it was defo. 3 and 5! did anybody get that stratified thing with 50 students or something?

[Elitist]

(Original post by Daniel77)
I done the tree diagram, the person done 3 picks.
You could of had:
B B G
B G G
G G B
G B B

G B G
B G B

?

[PaulRus]

yeh people, i put some of these answers you are saying. 33.3333...% for the difference in population, and i put 12cm for the last question. The question I'm kicking myself about a bit, but hopefully will get a mark for, is the solving of the equation: x/2x-3 + 4/x+1 =1 , i solved it for just one solution (gave just 9), because I saw a space for seemingly only one answer. When I think to get the 5 marks I should have put x= 9 or 1. But hopefully I should get 2/3 on that, what do people think? I do think the grade boundary for this paper will be 85+ marks for an A*.

Paul

[dancharlton]

probability - i did this


BBG – 4/7 * 4/7 * 3/7 = 48/343
GGB - 3/7 * 3/7 * 4/7 = 36/343

48/343 + 36/343 = 12/49

[Papaya]

(Original post by hbk91)
I had 6 fractions to add up that gave the probability of 2 exact colours and 1 different one...that added up to 243/343 for me...

Guys for the proportion one, did everyone get T=25x?

Oh and what where the upper bounds and lower bounds that you got?
...Oh and anyone remember that question on average speed?

Yep

273 was the first answer?

[Daisuke]

I got 1 for the algebra equation, but I put down -3/-4 by mistake... I dunno how... I still get 3 or 4 marks for the method right? :P

For the upperbounds one I did whatever.49... if it was .5 then it would of rounded up to the number above... wouldn't it?

[silver_j]

(Original post by Daniel77)
I done the tree diagram, the person done 3 picks.
You could of had:
B B G
B G G
G G B
G B B

It was actually:
B B G
B G G
B G B
G G B
G B B
G B G

[i'm no superman]

That stratified sampling was WRONG! They add up to 51, not 50 Edexcel!

Nevertheless I rounded down the first sample to 10 instead of 11, and the others were something like 22, and 12 I think.

[Prof Milne]

With the statified sampling question - did anyone keep getting their rounded numbers equaling 51 rather than 50?

[Elitist]

(Original post by hbk91)
I had 6 fractions to add up that gave the probability of 2 exact colours and 1 different one...that added up to 243/343 for me...

Guys for the proportion one, did everyone get T=25x?

Oh and what where the upper bounds and lower bounds that you got?
...Oh and anyone remember that question on average speed?

I got T=25x

I got 100.5 as the UB but I can't remember the LB.

The average speed (plane?) was 600km/h (or whatever the units were) wasn't it?