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WJEC S2 Mathematics (Legacy) - 9th June 2005
Could anyone do the second part of the uniform question (the triangle bit)?
I must have spent half an hour on that and I could not get it to match.
it was something like:-
X~U[4,10]
X is a wire, which is made into an equilateral triangle.
You had to prove A (The area of the triangle) =(√3)(X²)÷36 or something of the sort.
I spent so long on that that I'd completely forgot about continuity corrections and had to rush back and correct my work.
I also remember writing the binomial wrong! I wrote X~B(0.8,50) instead of the other way round. I wont get marked down for that will I? It isn't pivotal to the question, it just makes me look stupid!
I hope it went well, I only need 73% for my A.
I must have spent half an hour on that and I could not get it to match.
it was something like:-
X~U[4,10]
X is a wire, which is made into an equilateral triangle.
You had to prove A (The area of the triangle) =(√3)(X²)÷36 or something of the sort.
I spent so long on that that I'd completely forgot about continuity corrections and had to rush back and correct my work.
I also remember writing the binomial wrong! I wrote X~B(0.8,50) instead of the other way round. I wont get marked down for that will I? It isn't pivotal to the question, it just makes me look stupid!
I hope it went well, I only need 73% for my A.
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