Arsey's S1 Edexcel Answers 18th Jan 2013 Watch
LOL I knw what I did is soooo wrong. I just completely forgot it was a cumulative distribution. Only 2 marks. I just couldn't think of anything.
But I'll still hopefully end up getting around 63/75 after looking at the worked solutions, which will hopefully be an A.
Either way I don't want to screw up your hope in future exams, good luck with the rest you have.
Ok sorry for being annoying... I got my b value right but switched the bar m and bar t wrong to find a so my end formula was wrong.. Hence the next part being wrong because i used a wrong formula to work out the answer how many marks? Out of 5 in total
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Quick question with regards to 4c:
I did P(L>133 | L>127) = P(127< L < 133) / P(L>127)
And then inserted the values. How many marks would this gain me? 1?
cos they way I did it isn't wrong just not well done!
Then in part B I use the answer I get in part A to get answer, which is worth 2 marks.
Will I only lose 2 marks for part A, so I would get 2/4 in total?