how can I solve this one?

Saved Help Save & Exit Submit uppose that yearly health care expenses for a family of four are normally distributed with a mean expense equal to $3,000 and a tandard deviation of $500. An insurance company has decided to offer a health insurance premium reduction if a policyholder's sealth care expenses do not exceed a specified dollar amount. What dollar amount should be established if the insurance company vants families having the lowest 33 percent of yearly health care expenses to be eligible for the premium reduction (Round answer co nearest whole dollar amount.) WWW H Next > 6 of 29