Question

In: Statistics and Probability

Terry is a small business entrepreneur and owns 6 buildings for business use. The probability distribution...

Terry is a small business entrepreneur and owns 6 buildings for business use. The probability distribution below describes expected property losses for the group of 6 buildings. Assume that the property exposures are independent of each other.

Losses $                                                          Probability of Loss

$10,000                                                           0.20

$20,000                                                           0.10

$50,000                                                           0.06

$100,000                                                         0.03

$500,000                                                         0.01

  1. Find the average or expected loss of the group of buildings in a given year.
  1. Calculate the standard deviation of the distribution.
  1. Find the Coefficient of Variation.
  1. What is Terry’s actuarially fair premium?

Solutions

Expert Solution

(a) mean/average loss=expected loss=E(x)=sum(x*p(x))=15000

(b) standard deviation(sd)=sqrt(variance)=sqrt(2785000000)=52773 ( whole number approximation)

variance=E(x2)-E(x)*E(x)=3010000000-15000*15000=2785000000
E(x2)=sum(x2*p(x))=3010000000

(c) coefficient of variation=sd/mean=100*52773/15000=351.82%

(d) Terry’s actuarially fair premium would be expected loss=15000

x p(x) x*p(x) x2*p(x)
10000 0.2 2000 20000000
20000 0.1 2000 40000000
50000 0.06 3000 150000000
100000 0.03 3000 300000000
500000 0.01 5000 2500000000
sum= 15000 3010000000

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