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BluFoot
 2 years ago
Best ResponseYou've already chosen the best response.2You mean 14 i and ii? There's no (c) and (d). I got 1/25 for i and 1/5 for ii

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.0Oh wait. Q13 (c) and (d)

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.0And how you got that for Q14?

BluFoot
 2 years ago
Best ResponseYou've already chosen the best response.213C I got 10/16 and 13D I got 14/16

BluFoot
 2 years ago
Best ResponseYou've already chosen the best response.2Oops meant 1/5 for 14 i

BluFoot
 2 years ago
Best ResponseYou've already chosen the best response.2There are 25 possibilities right? 0 then 0, or 0 then 1, or 0 then 2 etc. 5 of them have the same number on both days: (0,0), (1,1), (2,2), (3,3), (4,4). So the probability is 5/25=1/5.

BluFoot
 2 years ago
Best ResponseYou've already chosen the best response.2Same idea with 14 ii. There are 25 possibilities. 5 of them have a total of 4: (0,4), (1,3), (2,2), (3,1), (4,0)

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.0I got right for 13(c).

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.0I don't get 14 one. Sorry. :/

BluFoot
 2 years ago
Best ResponseYou've already chosen the best response.2Make a probability tree with all the possibilites if you want. Like this, except there should 0,1,2,3,4 at the end of each of the 5 branches. dw:1354320893329:dw You can see there are 25 possibilities. How many of them have the same number on each day?

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1354321015621:dw

BluFoot
 2 years ago
Best ResponseYou've already chosen the best response.2There's one of them. Except you did the probability wrong, it's 1/5=0.2 not 0.1.

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.0No. In the table it's given 0.1

BluFoot
 2 years ago
Best ResponseYou've already chosen the best response.2OOOHHHHHH I completely forgot about the probabilities!! I'm sorry :P I was assuming each day had the same probability! I'll look at it again

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.0No problem. Sure. :)

BluFoot
 2 years ago
Best ResponseYou've already chosen the best response.2Yeah so you're on the right track. The probability of 4 on each day is 0.1*0.1=0.01. Now do the same for the other numbers.

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.0Perfect. What about part(ii) ?

BluFoot
 2 years ago
Best ResponseYou've already chosen the best response.2Now you want to look at all the possibilites that add up to 4. So: (0,4), (1,3), (2,2), (3,1) and (4,0) Find the probabilities of each of those and add them together.

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.0Got'ya. Thanks a ton.

angelpatterson
 2 years ago
Best ResponseYou've already chosen the best response.0Ok well that's a really long conversation.Why isn't it closed?
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