Helen, the owner of Dubrow Labs, worries about the firm being sued for botched results from blood tests. If it isn't sued, the firm expects to earn a profit of 100, but if it is successfully sued, its profit will be 10. Helen believes that the probability of a successful suit is 5%. If fair insurance is available and Helen is risk averse, how much insurance will she buy? (You may only be able to express your answer as an inequality.)