Mathematics (AS & A Level) · Oct / Nov 2017 · Paper 73 · Question 7

In the past the number of cars sold per day at a showroom has been modelled by a random variable with distribution Po0.7 . Following an advertising campaign, it is hoped that the mean number of sales per day will increase. In order to test at the 10% significance level whether this is the case, the total number of sales during the first 5 days after the campaign is noted. You should assume that a Poisson model is still appropriate.

Read automatically from the paper; the printed page above is exact.