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Math Advanced Prediction/Thoughts (1 Viewer)

stupidpersonlol

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I think its wrong, they gave u the mean and SD so it has to be something to do with z-scores which the answer didn't include. not to mention the z score is exactly 2, so probs with empirical rule as well. i did it as a conditional probability
I WAS GONNA DO THAT BUT I GOT LIKE 0.2
 

Jerryclover

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I think its wrong, they gave u the mean and SD so it has to be something to do with z-scores which the answer didn't include. not to mention the z score is exactly 2, so probs with empirical rule as well. i did it as a conditional probability
ahh, that makes sense. So probably probability of picking someone with 130 iq GIVEN that they finish the puzzle under two hours. Then i'll probably get 1 mark since i calculated the z value.
 

stupidpersonlol

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ahh, that makes sense. So probably probability of picking someone with 130 iq GIVEN that they finish the puzzle under two hours. Then i'll probably get 1 mark since i calculated the z value.
ok at least ill get 1 mark also
 

stupidpersonlol

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wait but if u did conditionla probability what answer did u get- coz i did that but got 0.02 which wouldn't be to 3 dec points
 

CM_Tutor

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Sir, can you check question 33? is that right? Aren't they independent events? So shouldn't it just be calculating the z score of z=(130-100)/(15)?
The answer given for q33(d) is incorrect, it is a conditional probability problem as the question asks for P(IQ > 130 given can solve the problem in under 2 h)
 

CopperPike

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1636969514953.png

I don't know if this was mentioned previously...but as the question asks for height above ground level, shouldn't the answer be 445m (so 345+100 above ground level)?
 

Jerryclover

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View attachment 33772

I don't know if this was mentioned previously...but as the question asks for height above ground level, shouldn't the answer be 445m (so 345+100 above ground level)?
No. The +100 in the equation y(t) accounts for that. But this question is fk'd up for advanced honestly, it's more of an ext1 question
 

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