In: Statistics and Probability
3. An insurer finds that the time until occurrence of a claim from its property insurance division is exponentially distributed with a mean of 1 unit of time, and the time until occurrence of a claim from its life insurance division is exponentially distributed with a mean of 2 unites of time. Claims occur independently in the two divisions. Find the expected time until the first claim occurrence, property of life.
for property insurance division mean λ1=1 unit
and for life insurance division λ2=2 unit
expected time until the first claim occurrence =1/(λ1+λ2) =1/(1/1+1/2) =2/3 unit