Please help with attached questions :

7-? Any claim made from a. portfolio of term life policies 1? for 3' 00113135313 amount 0'. It is decided to model aggregate claims S With a. compound distribution of the form 5' = X1 + - - - + X N where E(N) = 100 but N may be either 331339}: binomial or negjtwehiooial; Determine the ._ {Wilma lm Monthly aggregate claims S are modeled by a compound Poisson dis- tribution where /V has Poisson parameter 12 and a claim X takes the values {1, 5, 10} with respective probabilities (0.2, 0.3, 0.5). Determine the probabilities P(S = r) for r