Let the number of aberrations in the production of a large scalelens have a Poisson distribution. We want the probability that agiven lens contains at most one aberration to be greater than0.99.
a) Find the largest value of the mean that this distribution cantake.
b) Assume the mean is µ = 0.11. Determine the probability that abatch of 5 lens will have at least two lenses with at least onedefect each.
