Mathematics (AS & A Level) · Oct / Nov 2019 · Paper 72 · Question 6
9709
As printed in the paper
The question as text
The number of accidents per month, X, at a factory has a Poisson distribution. In the past the mean has been 1.1 accidents per month. Some new machinery is introduced and the management wish to test whether the mean has increased. They note the number of accidents in a randomly chosen month and carry out a hypothesis test at the 1% significance level.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
6(i)[6]
6(ii)[2]
6(iii)[2]
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.