Question

Sarah is currently unemployed and without health insurance coverage. She derives utility (U) from her interest...

Sarah is currently unemployed and without health insurance coverage. She derives utility (U) from her interest income on her savings (Y = $6) according to the following function:

U = (Y+10), Y = $6 => U= 16

She realizes that there is about a 20% probability that she may suffer a heart attack with the cost of treatment of about $2.

A. Calculate Sarah expected utility level without any health insurance coverage.

B. Suppose Sarah must pay an annual premium of $2 for health insurance coverage with ACME insurance. Would she buy the health insurance? Why or why not?

C. Suppose Sarah must pay an annual premium of $1 for health insurance coverage with ACME insurance. Would she buy the health insurance? Why or why not?

Homework Answers

Answer #1

Answer.

A. For Expected Utility in absence of insurance,  

E = p(Utility with no heart attack) +(1-p) (Utility with heart attack)

Here,

Probability of heart attack=p=0.20

Probability of no heart attack=1-p=1-0.20=0.80

So, E = 0.20 (14) + 0.80 (16) = 15.6

B. In case of insurace,

Expected Utility = 0.20 (14) + .80 (14) = 14. (As, she has to pay the insurance premium in either case)

Her expected utility with insurance is lower, so she will not buy theinsurance.

C. Smiliarly, in case of $1 premium,

Her expected utility = 0.20 (15) + .80 ( 15) = 15

It is still lower than with no insurance, so she will not buy the insurance.

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