1. Use the claim history data below to answer the questions below. Assume all claims are paid by the end of the 3^rd year following the accident year (so, for example, there will be no further paid claims for the 2017 Accident Year after 2020).

Accident	Cumulative PAID claims history through end of:
Year	2017	2018	2019	2020
2017	200	450	1000	1100
2018		150	350	1200
2019			300	750
2020				250

Consider which format is shown here and how to format for analysis. This is the format used more often by health actuaries.

1. (5 points) What was the total amount of claims payments during 2019?
2. (5 points) What is the 2^nd to 3^rd period link ratio for the 2017 accident year?

3. (5 points) What is the estimate of ultimate loss for accident year 2019?

4. (25 points) Assuming these are the only paid claims (i.e., the company did not exist before 2017), use the paid development method discussed in class to determine the loss reserves at the end of 2020 for each accident year and in total for all accident years combined.