ecmt1010 ..QUiZ next week? (1 Viewer)

[sarevok]

zzzzzzzzzz

 

[stazi]

komit, can u expand on how you did 10c? or sarevok. As in expand the whole thing. I'm really confused in it

 

[Komit]

fuck i done the formula wrong, when i didnt even have to do it. Thanks sarevok.

 

[stazi]

oh and for q10 a) Use the joint distribution notes on blackboard explains marginal distribution

 

[sarevok]

zzzzzzzzzzzzzzz

 

[Komit]

Wait, wait, wait....

(B)
P(A|B) = P(A and B)/P(B) = 0.19/(0.19/1) = 0.19/1 = 0.19

(C)
For them to independent P(A|B) = P(A)

P(A|B) = 0.19 whereas P(A) = 0.31 <-----add up 0.19, 0.09. 0.03


My mistake was calculating probablity for just one day, instead of all 3.

 

[Komit]

Sarevok, are the answers to 12b and 12d the same?

 

[sarevok]

zzzzzzzzzzz

 

[stazi]

Question 10
please have a look guys to see if its right

 

[Komit]

I think your (b) and (c) is wrong. Check out sarevok's reasoning.

No sarevok, you are right - i just found it odd that they would put s conditional probability question before a joint probability one

 

[stazi]

ahhh so which formula would i use for 10b?

 

[Komit]

Don't have to - it's in the chart.

 

[stazi]

komit, u sure that q10b is wrong? i asked a mate who got the same answer as me. hes also confirmed it with his mates.

 

[sarevok]

zzzzzzzzzzzzzzzzzzzz

 

[stazi]

its not in the chart. X could equal -1, 0 and 1. The question asks what the P of x equaling -1 would be out of those 3 options

 

[stazi]

hehe part c is wrong.

 

[Komit]

I'm so fucking confused!!

 

[sarevok]

zzzzzzzzzzzzz

 

[s.m.i.t.h]

do we still have the rest of the workshop
or can we leave after quiz is finished?

 

[Komit]

Can you please tell me how u got 12e - so i can see if my one is right coz i feel fucked?!