Nope, he no do stats =( And yeah I got the 0.513.. just after the exam :/ spent 20mins on that xD I would say that's far harder than usual. Also a lot more discussion of this going on in the "revision" thread,
My colleague Mr K has done some answers though and I photocopied them. Might put them up later if there are queries.
My colleague Mr K has done some answers though and I photocopied them. Might put them up later if there are queries.
I don't think anyone would complain if you were to post them =) However, it does take a lot of time on your part :/ Generally, would you say this was a harder paper?
The problem with stats is that its harder to remember your answers as they're all obscure decimals.
i thought that there are 10 ways of arranging with them, but only one way without them meaning that the total number of combinations was 11, then out of 21 because thats the total number of groups. I could be wrong
i thought that there are 10 ways of arranging with them, but only one way without them meaning that the total number of combinations was 11, then out of 21 because thats the total number of groups. I could be wrong
the wording was GIVEN THAT either they are both chosen or neither are chosen, what is the probability they are both chosen?
Therefore, it is only the both/neither you consider. you want essentially (total ways of both)/(total ways of both+total ways of neither). Hence 10/11
My colleague Mr K has done some answers though and I photocopied them. Might put them up later if there are queries.
Hello, I just wanted an opinion.
In a question basically it was P(x=1) + P(x = 3)
But I thought time was 1:30 in the afternoon not in the morning so got P(x = 27) if the working is all correct will this get a mark? or is it just too completely wrong? it's out of 3.