Math Advanced Prediction/Thoughts (3 Viewers)

DarkOperator618

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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

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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

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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

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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.
 

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