Before the natural gas companies came to Central Pennsylvania and changed the health status of the people living there, 100% of the households in one...

Before the natural gas companies came to Central Pennsylvania and changed the health status of the people living there, 100% of the households in one county had employer-paid health insurance. The fair premium per family was $8300 per year, and every policy required each family to pay 20% of their own expenses while the insurance company covered the other 80%. There were also loading factors that we will ignore although they are included in the premium charged to the employer. We are interested in knowing how the premium must change to account for the increased risk of AML and how the cost to the insured (as a deductible) is likely to change.

The $8300 premium that is currently being paid is "sunk cost." It already includes the average risk of AML for the population throughout the nation and should not be included in our calculations. We are interested only in calculating the increased risk and increased cost for this particular population, and determining the rating that must be added to the existing premium to cover this new precondition. 

The increase in prevalence rate for AML and the cost of treating each case of AML are given in your question set. They are sufficient to calculate the rating as an Expected Value. This rating would then be added on to the $8300 annual payment that employers are already paying.

Question 1: Expected Value Cost of AML to individuals living in the county 

Within the population of the county (520,000 people) the prevalence rate of AML has increased by 0.002% per year (in decimal form, 0.00002). The average cost of treatment associated with one case of AML from diagnosis to death is $165,000. 

Question 1: Find the Expected Value Cost as the product of the actual cost of treatment and the increase in prevalence.

What is the EV Cost?