Mathematics (AS & A Level) · Feb / March 2017 · Paper 72 · Question 4
9709
As printed in the paper
The question as text
At a doctors’ surgery, the number of missed appointments per day has a Poisson distribution. In the past the mean number of missed appointments per day has been 0.9. Following some publicity, the manager carries out a hypothesis test to determine whether this mean has decreased. If there are fewer than 3 missed appointments in a randomly chosen 5-day period, she will conclude that the mean has decreased.
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4(i)[3]
4(ii)[1]
4(iii)[3]
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