AQA Stats 1 B 17th Jan 2012

I suggest giving it to 4 significant figures.

Sometimes the probability questions involved potatoes or £ want you to round so it is a whole number; how do I know when to do this?

Well, that was fun. So many words.

Haha, you actually enjoy that? ... I've got no idea how to interpret those wording questions, didn't even have enough time to go over everything. Probability question was a bitch. 11 bloody marks for 4 questions...

Sarcasm doesn't translate very well over the internet. I screwed up the probability question, didn't answer part B or Ai and what I did answer I'm pretty sure was wrong. Meh.

I'll just resit in June.

Ok so I did stat 1a not 1b but I reckon questions were the same except that you had an extra question. Anyway, wasn't there a mistake in probabilities question? Because probability that A guy plays is 0.85 and probability that B guy plays is 0.60. Show that probability of neither of them playing is 0.10. So 1-0.85 = 0.15 and 1-0.6 = 0.4 and 0.15*0.4 = 0.06 wtf it's not 0.10. WTF?
And for question 5, which was worth 4 marks (dunno if it was the same on 1B) there was half a page of a text.. Was not enough time I managed to do each 1a past paper within an 1h or so, out of 1h 15min, but this one just.. omg... and for probabilities I messed up as I had 2 minutes to finish off whole question.. for aii) i messed up, because it said probability that they both play is 0.55 but I multiplied 0.85*0.6 to get it, I thought I had to work it out.... and that valuewas below by 0.04, so I got 0.94 instead of 0.98 :/ and in bii) I wrote everything out, but didn't have time to calculate the value ****ing invigilator took the paper off me.

Was set out different to all previous exams but I thought it was okay, apart from the one where nobody seems to have been able to get the answer. I only revised yesterday for it so whatever I get is really my own fault lol.