Was it offer 2 for that one question about buying and selling the car ?
Yup I believe it was offer 2. I also remember writing 10 & 5 for the disc question along with 5,12 & 29 for the range question. Hope somebody makes an unofficial mark scheme.
What? That was serious! Seriously, there is a large amount of work that comes with A levels (although I don't think the jump is as big as people make it out to be), just think, you have the longest summer of your life after the exams!
What? That was serious! Seriously, there is a large amount of work that comes with A levels (although I don't think the jump is as big as people make it out to be), just think, you have the longest summer of your life after the exams!
Yep i did get the value 33mph in my workin but then i found thae area for that and took it away from the amount of cars left over 30mph. Im sure the question said what is the prob of two cars picked at random being above 10% the speed limit.
yeah so then you do like the area for that over how many cars times the area thing -1 of the how many cars -1? i cant remember :L haahh is there any unofficial answers?
hmm, i cant remember my answer for the last question , but did you get like 33mph? and then find the area of this histogram for that? i'm unsure
I think I wrote what somebody else here said, 581/83250 I believe i found 33mph or something then done like eg x/y * x-1/y-1 I used probability anyhow... i think i found the 33mph using the table though, not the histogram so i could have messed up, not sure! :P
yeah i wasn't really sure about my answer for last question.:/ i did 30x1.10=33 then 3 (class width) x 12 (frequency density)=36 36/1000 x 35/999 = 7/5550 is that right? :/