FREE download: 2018 Specialist Mathematics Trial Exam 1 Solutions

2018 Specialist Mathematics Trial Exam 1 Solutions – PDF 95 KB

Thanks to Jonas Tiong of Mazenod College for pointing out a mistake in the solution to Question 9b. It does not recognise the independence of each copy of X. The solution implicitly uses Var(X+X-1)=Var(2X-1). Rather if you break it up to Var(X) +Var(Y), you’ll arrive at an answer of 1, not 2.

 


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