• Congratulations to the Class of 2024 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here

Math Advanced Prediction/Thoughts (4 Viewers)

DarkOperator618

Well-Known Member
Joined
Jul 31, 2020
Messages
1,346
Gender
Male
HSC
2021
Like I said Sydney Morning Herald frequently tried to play the victim card. Especially given what they do everywhere from Dave Elliot, John Barilaro with the Friendlyjordies case etc.
i really don't like them ngl, love to make it hella dramatic
 

Greninja340

Active Member
Joined
Apr 28, 2020
Messages
288
Gender
Male
HSC
2021
1636963682796.png
For part B is it its meant to be 1-(P(0.1)+P(0.2)+P(0.3)+P(0.4)) right? cause it says greater than Z=4? Is this correct or were you not meant to subtract P(4) from 1?
 

heatblaster34

New Member
Joined
Feb 21, 2019
Messages
25
Location
Bunnings Warehouse
Gender
Male
HSC
2021
Does anyone know how the moderating would work this time for advance maths???? Or maybe what would likely be a cut-off mark for a band 6?
 

Trebla

Administrator
Administrator
Joined
Feb 16, 2005
Messages
8,401
Gender
Male
HSC
2006
For part B is it its meant to be 1-(P(0.1)+P(0.2)+P(0.3)+P(0.4)) right? cause it says greater than Z=4? Is this correct or were you not meant to subtract P(4) from 1?
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.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 4)

Top