In: Statistics and Probability
An insurance company has 20, 000 policyholders. The amount claimed yearly by a policyholder has
an expected value of $150 and a standard deviation of $750. Use the central limit theorem (CLT) to
approximate the probability that the the total amount claimed in the coming year will be larger than
3.3 million dollars.
Total policyholders = n = 20000
mean = $150 and
standard deviation = $750
Where, 1 million dollar = 1000000 dollars
3.3 million dollars = 3.3 × 1000000 = $3300000
We want to find, the
probability that the the total amount claimed in the coming year will be larger than 3.3 million dollars.
sample mean = 3300000 / 20000 = $165
That is to find,
Therefore, required probability is 0.0023