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# S2 Sampling Distribution Median Watch

1. Hi guys so this question is getting on my nerves - I can't see how they get the median probability for 20? I have done all of the possible combinations and I still get 56/125? I have got (20,20,20), 3(20,20,50), 3(10,20,20), 3(10,20,50) and there's still more apparently, maybe it's an obvious one but I can't seem to get it?

cheers

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2. (Original post by iMacJack)
Hi guys so this question is getting on my nerves - I can't see how they get the median probability for 20? I have done all of the possible combinations and I still get 56/125? I have got (20,20,20), 3(20,20,50), 3(10,20,20), 3(10,20,50) and there's still more apparently, maybe it's an obvious one but I can't seem to get it?

cheers

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The list seems complete as regards the values of the coins, although it should be 6(10,20,50)
3. (Original post by ghostwalker)
The list seems complete as regards the values of the coins, although it should be 6(10,20,50)
How comes?
4. (Original post by iMacJack)
How comes?
Number of arrangements of 3 distinct objects = 3! = 6

a,b,c
a,c,b
b,c,a
b,a,c
c,a,b
c,b,a.
5. (Original post by ghostwalker)
Number of arrangements of 3 distinct objects = 3! = 6

a,b,c
a,c,b
b,c,a
b,a,c
c,a,b
c,b,a.
Awesome cheers!

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