Mathematics (AS & A Level) · May / June 2021 · Paper 63 · Question 6
9709
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The question as text
Alethia models the length of time, in minutes, by which her train is late on any day by the random variable X with probability density function given by fx = T 3 8000x −20 2 0 ≤x ≤20, 0 otherwise.
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6(a)[4]
6(b)[4]
6(c)[4]
6(d)[1]
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