1. When an individual is admitted to the hospital, the hospital charges have the following characteristics. Room charges have a mean of 1000 and a standard deviation of 500. Other charges have a mean of 500 and a standard deviation of 300. The covariance between an individual's room charges and other charges is 100,000. An insurer issues a policy that reimburses 100% of room charges and 80% of other charges. Calculate the standard deviation of the insurer's payout for a hospital admission