Math Advanced Prediction/Thoughts (2 Viewers)

[CM_Tutor]

Do you think this exam was harder than last years?

Yes, that's my impression, though it strikes me more as challenging than unreasonable.

 

[stressedadfff]

so would we get scaled up orrrr

 

[stupidpersonlol]

so would we get scaled up orrrr

girl how did u go

 

[stressedadfff]

girl how did u go

horrid - couldnt be worse! wbuuu

 

[Jerryclover]

The probability you are looking for is P(Z>0.4). The table only gives you P(0 < Z < 0.4), so you're missing half the entire normal curve. This means you need to do a bit of manipulation first
P(Z > 0.4) = 1 - P(Z < 0.4) = 1 - [0.5 + P(0<Z<0.4)] ~ 0.5 - 0.1554 = 0.3446

The answer in the attachment is wrong. You cannot have more than half of the babies being above the average for a normal distribution.

What do you think about this year's exam? (if you've gone through it)

 

[DarkOperator618]

great, thanks, gonna go cry now

 

[stupidpersonlol]

horrid - couldnt be worse! wbuuu

equally horrible woooo

 

[Jerryclover]

Yes, that's my impression, though it strikes me more as challenging than unreasonable.

Ahh, ok. At least there's scaling to compensate for that

 

[CM_Tutor]

The answer posted for Q23 is wrong, too. The derivative of is (as the solutions state) only if . The derivative is actually .

 

[stupidpersonlol]

wait but ive just checked the scaling report and in the past years its around like 77-80 minimum to get b6 so would that mean this year its like 65?

 

[stupidpersonlol]

imagine if we're like the only ppl who found it hard and the james ruse kids are quietly enjoying it

 

[Jerryclover]

wait but ive just checked the scaling report and in the past years its around like 77-80 minimum to get b6 so would that mean this year its like 65?

Unlikely... The highest scaling before was the 2013 paper in which the band 6 cutoff was 75.

 

[stressedadfff]

equally horrible woooo

omg... i just checked the solutions i did not scrape a band 3 ... do i cry or kms orrrrr???

 

[DarkOperator618]

i aint even gonna look cus i don't wanna stress

 

[stressedadfff]

i wish i didnt see the solutions im actually clinically depressed for a weak i cried enuf today - im gonna get disowned by myself

 

[stupidpersonlol]

omg... i just checked the solutions i did not scrape a band 3 ... do i cry or kms orrrrr???

;((((( did u get less than 50

 

[stupidpersonlol]

true i cant concentrate anymore

i wish i didnt see the solutions im actually clinically depressed for a weak i cried enuf today - im gonna get disowned by myself

 

[stupidpersonlol]

did anyone from top selective schools get like 50%? please comfort us

 

[stressedadfff]

;((((( did u get less than 50

probs lol...wbu

 

[stupidpersonlol]

okay so i am not getting a band 6 but what is the probability of someone doing well in 3u and 4u when they fucked the 2u exam lol especially all the stats questions. im losing hope in my maths skills but its too late to redo 2u && i also go to one of the decent selective schools and many said they found it okay im so deceased

WOAH AT LEAST U CAN DO IT NEXT YEAR...