2005 HSC Answers (2 Viewers)

[Jayphen]

i did $C=300+400+(12x) still should get the same marks just didnt add the others

Ditto. It means the same thing, so it should be fine.

 

[ridel]

craigies back!

rumours in NRL craigies back but full of diabetes!!
okay l u twats need to chillax grab a brew and watch some ACE!
dont hassell the hoff!!

 

[Boom Selecta]

yeah 95 with a standard deviation of 2.

 

[anita_wax]

answer to 28.b. (iv) is$23

WOOOO! i got that

 

[chelto_girl]

FINANCIAL MATHS!!! how da hell do u do 25 c ii and iii?

 

[anita_wax]

according to your answers pc i should have 59% although i didnt give myself any marks for working out if the answers were wrong, so i think i might get around 63/4% which im happy with

 

[mitch250]

thanks for posting those results

If those results are correct, which i hope they are, i should get 95-96%. so i hope they are right! pretty good paper overall i thought

 

[ranon]

fro 25ii., i worked out that there would be a 3/5 chance to win $4, which would mean
5 X 12 = 60, so 3 X 12 = 36. 36 X $4 = $144. but to lose $8 = 1/5 chance, 1 X 12 = 12.
$8 X 12 = $96, 144 - 96 = $ 48 so she won $48 in total.

For 25iii. i figured that now she had
to win 3/6 = 30 X $4 = 120
to lose 1/6 = 10 X $8 = 80.
$120 - $80 = $40 so she lost $8, therefore "financial expectation" WILL change, ie. dont agree.

Hope that helps,.

DAMN THAT JANE AUSTEN!!!!

 

[danieljarvis]

umm..

25 c ii) - (0.2 x 4) + (0.2x4) +(0.2x4) + (0.2x0) + (0.2 x -8)

= 0.8 ( 80c ) financial expectation

c iii) (1/6 x 4) + (1/6 x 4) + (1/6x4) + 1/6x0) + (1/6x -8) + (1/6x0)

= 2/3 ( 67c )

So Yes there is a change in financial expectaion. 13c worth. that is the correct method.

 

[Brookie7]

does ur scaled mark go up or down??
and i agree with ranon..... or am i wrong.. are the answers really 80c and 67c???? i dont get that considering its winning whole dollars??

 

[danieljarvis]

scaled marks change depending on what you get.. in general maths if you want your RAW mark to go up after scaling.. it will need to be in the 90s somewhere i think..

and sorry your wrong. im sure my answer is right.. and this threads answers agree with me.

 

[Casmira]

what about low 90s whats that get aligned to normally?

100% in general maths gets scaled down to 88 or 89 afaik

 

[Danni07]

I checked my working for that question from my notes and textbook, and it was certainly the right method, plus I also got 80c and 67c which seems to be the general consensus...

 

[Danni07]

what about low 90s whats that get aligned to normally?

100% in general maths gets scaled down to 88 or 89 afaik

I really don't understand this scaling at all, butfrom that statement it looks like it's impossible to get a band 6... That doesn't make sense to me... Can someone explain it?

 

[Brookie7]

wait one peron says that it goes down by like 10% but... the other says it goes up if u get above 90%... meh this is so confusing. all i want to do is get in uni. this sucks

 

[danieljarvis]

im not sure any of us know how it all works.
but i swear i read somewhere that people got 100 in general maths last year?
there are no caps on marks, and if you get a very high mark in the top 2 percent say, i dont see why they should scale that down to 89...

but when you say scaling, are we talking about scaling towards UAI , or scaling towards your exam and HSC mark???

 

[Danni07]

wait one peron says that it goes down by like 10% but... the other says it goes up if u get above 90%... meh this is so confusing. all i want to do is get in uni. this sucks

Agreed! (10 chars)

 

[ranon]

umm..

25 c ii) - (0.2 x 4) + (0.2x4) +(0.2x4) + (0.2x0) + (0.2 x -8)

= 0.8 ( 80c ) financial expectation

c iii) (1/6 x 4) + (1/6 x 4) + (1/6x4) + 1/6x0) + (1/6x -8) + (1/6x0)

= 2/3 ( 67c )

So Yes there is a change in financial expectaion. 13c worth. that is the correct method.

oh god, i thought i was so smart...

 

[Brookie7]

i meant my actual hsc mark for gen maths. i think the 100% to 89% thing sounds stupid.
goign back one sec to the financial expectation thing. so you think that there only asking for the one game financial expectation or robyns game of 60? the question is a bit vague

 

[danieljarvis]

yeh that actual hsc mark, i dont believe they can do that.. my maths teacher told me if my marks were in the mid 90s that they would stay that way. so im guna believe him for my own sanity

and that question, one game or 60.. makes no difference either way her financial expectation will stay the same.

if u work it out /60 games.. it will just be the same.

(1/5x4) + (1/5x4) + (1/5+4) + (1/5x0) + (1/5x-8) = 0.8

1/5 x 60 = 12/60

(12/60x4) + ( 12/60x4) + (12/60x4) + (12/60x0) + (12/60x -8) = 0.8 aswell

i think thats what you were getting at.. i hope so, cos that took far too long to write