(a)[4]
Use a suitable approximating distribution to determine the probability that fewer than $3$ children in the sample have not been vaccinated against measles.
(b)[2]
Justify the selection of the approximating distribution.
Mathematics 9709 · AS & A Level · The Poisson distribution
The Poisson distribution — practice question
It is stated that $1.8\%$ of the children in one country have not had measles vaccination. A simple random sample of $200$ children from this country is selected.