Mathematics (AS & A Level) · May / June 2026 · Paper 62 · Question 3
9709
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The number of vehicles, X, passing a certain junction between 1.00 pm and 1.01 pm is modelled by a Poisson distribution. In the past, the population mean of X was 2.4. After a change is made to the junction, the value of X is noted on a randomly chosen day. A hypothesis test at the 5% significance level is carried out to determine whether the population mean of X has increased.
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3(a)[1]
3(b)[4]
3(c)[1]
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