Mathematics (AS & A Level) · Oct / Nov 2018 · Paper 72 · Question 4
9709
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The question as text
The time, X hours, taken by a large number of runners to complete a race is modelled by the probability density function given by fx = t k x + 1 2 0 ≤x ≤a, 0 otherwise, where k and a are constants. a + 1
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4(i)[3]
4(ii)[1]
4(iii)[3]
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