Exercise 18.8.4 Assume you are the responsible actuary for the insurance company Bonus Insurance Group (BIG). You're asked to make a report on the suggested differentiations of premiums per insurance class given that the desired claim index is (50%) the one in insurance class A. 482 Exercise 18.8.4 Assume you are the responsible actuary for the insurance company Bonus Insurance Group (BIG). You're asked to make a report on the suggested differentiations of premiums per insurance class given that the desired claim index is (50%) the one in insurance class A. 482