Suppose a pool of insurance policyholders can be classified
into groups 1, 2, and 3. For a person from group i, the
number of accidents that the person will have in a year follows a
Poisson distribution with parameter i, for i=1, 2, 3.
Suppose 20% of the policyholders are in group 1, 40% in group 2 and
40% in group 3.
For a policyholder in group 3, what is the probability that the
person will have at least one...