Consider a Rothschild and Stiglitz model of adverse selection in which there are two types of people
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Question:
Consider a Rothschild and Stiglitz model of adverse selection in which there are two types of people (robust and frail) and a single insurance firm. Both types of people are risk averse in income and have utility function of wealth:
U(W) =W^
where=0.2. During any given year, frail individuals face a probabilityp^L frail=0.4 for
minor medical conditions and a probabilityp^H frail=0.2 for catastrophic medical conditions.
The corresponding probabilities for a robust individual arep^Lrobust=0.2 andp^hrobust=0.1.
Minor and catastrophic medical conditions have a fixed cost of $100 and $500 respectively. The initial wealth for both robust and frail isW=$1000.
- Find the fair premium for a contract offered to frail individuals that offers (a) full coverage, (b) only minor conditions coverage and (c) only catastrophic coverage.
- Find the fair premium for a contract offered to robust individuals that offers (a) full coverage, (b) only minor conditions coverage and (c) only catastrophic coverage.
- Which contracts are attractive to frail individuals?
4. Which contracts are attractive to robust individuals?
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