A-LevelMathematicsProbability and statisticsFeb/Mar 2023Paper 6 Q45 Marks
The number of accidents per 3-month period on a certain road has the distribution Po(λ). In the past the value of λ has been 5.7. Following some changes to the road, the council carries out a hypothesis test to determine whether the value of λ has decreased. If there are fewer than 3 accidents in a randomly chosen 3-month period, the council will conclude that the value of λ has decreased.
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