A-Level Edexcel Statistics S1 June 2010 Q4 : ExamSolutions

[persianprinceG]

Brilliant! im teaching myself As and you sir are a STAR

[PBdoshi]

Exactly. Its P(C)/no. of people who read at least one magazine, which is 6+3/20 = 9/20

[bigsoso]

they are the formula for indie events is P(BnC)=P(B)*P(C). in this case (10/30)*(9/30)=3/30 which equals 1/10 the same as P(BnC)

[ExamSolutions_Maths]

fast forward then or don't watch them.

[muhanstein]

yeah you are right he must have made a mistake

[MrTehbigcheese]

B is kinda confusing.. it says A or B or both.
I did p (a) + p(b) + the intersection..so frustrating!