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How was 9709_w15_qp_62?

Difficulty level.


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Agh, I messed up the probability distribution part, I was in a hurry. Does anyone remember how many marks that question had?
 
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My answers:
1)22
2)84/8008
3)1/4, (3/4)^4 x 1/4, (1/4)
4)i) 60,
5)IQ: 19, 103.4
6) Var(X)= 2.875,
7)316 days, binomial part= 0.840, 0.933
don't remember the remaining
I pretty much got the same, except for 3 iii) and 5 i)
 
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I got that wrong, because my initial table was wrong.
Do you remember what that whole question was worth? (how many marks)
 
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Hell yeah its 480. 5! For 5remaining seats and 2!*2! For j and s arranged between 3seats while being together.
Also the 30 is obvious 6C4*4C4*2

But what about positive/even? Any experts I did it wrong and got 0.5
 
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Agh, I messed up the probability distribution part, I was in a hurry. Does anyone remember how many marks that question had?
Yo any idea where you messed up? I got final ans 1/2 too but i remember doing the table fine(checked but adding everything they became 1. But i too messed up the varience my mean wasnt exactly 1
 
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