For a group health contract, aggregate claims are assumed to have an exponential distribution, where the mean of the distribution is estimated by the group underwriter. What is the purpose of aggregate stop-loss insurance for aggregate claims in excess of 125?
1) To provide coverage for individual claims within the group
2) To limit the total amount the group will pay for claims
3) To reimburse the group for claims already paid
4) To estimate the mean of the distribution