A level Statistics doubt??Post your doubts here!

[Rohan O]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_63.pdf

Q7 (ii)

 

[Haya Ahmed]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w10_qp_61.pdf

Q2 , Q3(ii) , Q5(i), Q7(i) and Q6(iv) and (v)

 

[syed1995]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_61.pdf

Q2 , Q3(ii) , Q5(i), Q7(i) and Q6(iv) and (v)

for 5i it will be 1- (less than two choose B) so

One Chooses B = R'B'A + R'A'B + A'B'R (where ' means probability that they did not choose B)
Zero Chooses B = R'B'A'

1-(One Chooses B)-(Zero Chooses B) should give you the answer.

 

[Princess Raven]

Can anyone solve part ii why did they time it by 2?

 

[Fahm Deen]

Oct/nov 2012 paper-63 no.6(c).
Can anyone give a good explanation.

 

[Aajinkya]

help in sub-question (iii) please? With steps on how you found the midpoints please? Answer is 37.6 by the way