sarahabc123
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Hmmm that's a pretty weird question. Is the answer c ?
( though I have a strong feeling it's not :L )
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HSC General Maths Marathon (4 Viewers)
- Thread starter DJ696
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( though I have a strong feeling it's not :L )DancingAnz
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Nope, A... I'm so confused with how to do financial expectation properly, swear it's different for every questionHmmm that's a pretty weird question. Is the answer c ?
jess_1495
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Are you sure it is A?Nope, A... I'm so confused with how to do financial expectation properly, swear it's different for every question
DancingAnz
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This.
DancingAnz
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I remember that question^. The financial expectation is something like (240x1/96) + (120x1/95) + (60x2/93)
And therefore the financial gain is expected to be the financial expectation -$6 which gives -$0.75
I can't remember for the life of me the probability they used to get the answer though, the ones I used just then seem correct to me and it gives the wrong answer so idk. I do remember the question though and you can get A.
Anyone wanna refresh me on stratified etc. samples? Lost my notes and I don't wanna have to drive over and get them. ._.
And therefore the financial gain is expected to be the financial expectation -$6 which gives -$0.75
I can't remember for the life of me the probability they used to get the answer though, the ones I used just then seem correct to me and it gives the wrong answer so idk. I do remember the question though and you can get A.
Anyone wanna refresh me on stratified etc. samples? Lost my notes and I don't wanna have to drive over and get them. ._.
spanky125
Just waitin' for a mate
Adam pours rice bubbles at a rate of 
x
His bowl can hold 5600 rice bubbles. How many seconds until his bowl is full?
His bowl can hold 5600 rice bubbles. How many seconds until his bowl is full?
5 seconds 36 ms (5.6 seconds)Adam pours rice bubbles at a rate of
His bowl can hold 5600 rice bubbles. How many seconds until his bowl is full?
ithink
spanky125
Just waitin' for a mate
You are correct with 5.6 seconds
spanky125
Just waitin' for a mate
If you wanted to use milliseconds then it is 5 seconds 600 milliseconds
DJ696
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did 2010 past paper and scored 83/100 haha :L and MC stuffed me up !Just finished doing it.. I found MC alright, got 20/22 but short questions were t.e.r.r.i.b.l.e
didnt even think of that rofl fuck me
what are the types of samples we have to know again I forget lulz
stratified and the other 3
DJ696
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mc always does
aldo8118
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I put 11ay over 1 as a fraction then you can cross out both the Ys then just multiply both top and bottom