Urgent: Maths CIE Stats

[Deadly_king]

ok thankx.. do let us know and By the way DK, as i asked b4, what do u think my grade wil be based on the marks i gave you.

Ooh..yeah. Sorry i forgot about it.

I managed better in p1 but worst in S1. So from my point of view, the threshold is not going to decrease much in p1 but a bit more in S1.

Though am not sure koz it will depend on the general trend and how students all across the world have performed.

But you'll sure be getting a B or an A.

[$!$RatJumper$!$]

that jus made my day so much worse.. "But you'll sure be getting a B or an A." .. a B.. noooooooooo i NEED an A in order to get into uni!

[Deadly_king]

that jus made my day so much worse.. "But you'll sure be getting a B or an A." .. a B.. noooooooooo i NEED an A in order to get into uni!

Hey am not sure about it.

I've calculated your percentage from the points you think you'll be getting.

If it is the case then 82.4% will get you and A.

[$!$RatJumper$!$]

oh ok... what is the lowest overall percentage to get an A generally.. 80?

[Deadly_king]

oh ok... what is the lowest overall percentage to get an A generally.. 80?

Usually it is 80. But it can decrease upon difficulty of paper.

[lana]

can you guys remember the answer for question five the one about the normal distribution ??

[Deadly_king]

can you guys remember the answer for question five the one about the normal distribution ??

Hmm.............nope. Sorry can't even remember the question.

[lana]

well i remember there were two cars a zodiac with mean 320 and s.d 21.6 and the other car has mean 350 and I think the s.d was the same as the first one !! any memories ??

[Deadly_king]

well i remember there were two cars a zodiac with mean 320 and s.d 21.6 and the other car has mean 350 and I think the s.d was the same as the first one !! any memories ??

Ooh...........yeah.

The other car was Ganmor I think. And for the second part we needed to find d, right?

d was a small value, can't remember exactly though.

[$!$RatJumper$!$]

i got 4.96 or sumthin like that for d

[lana]

i got d= 4.96 but in (i) did you subtract the answer from 1 or not ??

[Deadly_king]

i got d= 4.96 but in (i) did you subtract the answer from 1 or not ??

Yeah.......i think I got that too.

Hmm............don't know

[lana]

hehehe okii thanks anyway and don't worry about the paper i'm sure you'll do great  just focus on the coming exams for now

[Deadly_king]

hehehe okii thanks anyway and don't worry about the paper i'm sure you'll do great  just focus on the coming exams for now

Anytime

I hope so

[SAKS10111]

ur talking about part i right? if u are, i agree what u did but if u see i also added + (10C4*9C1*14C1). This was because u can ALSO have 4 men, 1 woman and any 1 other, either man or woman.

I'm not sure of this of course, but I don't think your answer is right. I got 9828 ways. 4 men, 1 woman and 1 man/woman- this doesn't make sense. It has to have a minimum of 4 men, right? This means that the only possible combinations are 4 men-2 women and 5 men-1 woman. So the answer should be (10C4*9C2)+(10C5*9C1)= 9828
I also got 2/3 for the last answer and I don't remember my other answers to that question, but I can probably work them out later and check them with you guys.
I got 8/11 for that 6 mark question, I'm SO HAPPY that other people got that answer too! That question was extremely confusing, you had to think about it for quite a while before attempting it. This was a tough S1 paper by comparison, so threshold should be atleast 35.
My new mean and standard deviation were 52.something and 7.something, if I remember right.