Actuarial Modeling

For a 11-year mortality study of 20 persons with right-censored data, you are given in attached photo. 

a)Find the Kaplan-Meier Estimate of S(10).
b)Calculate S(12) using Brown, Hollander and Korwars tail correction. (c)CalculateS(10)basedontheNelson-alenEstimateforH(10).