A gamma g(4.3,6.2) random variable is given. Calculate the mean using (a) accept-reject with a gamma g(4,7) candidate.

a) Calculate the mean of a gamma g(4.3,6.2) random variable using (a) accept-reject with a gamma g(4,7) candidate.
b) Calculate the mean of a gamma g(4.3,6.2) random variable using (b) accept-reject with a gamma g(4.5,6.5) candidate.
c) Calculate the mean of a gamma g(4.3,6.2) random variable using (c) accept-reject with a gamma g(4.2,6.6) candidate.
d) Calculate the mean of a gamma g(4.3,6.2) random variable using (d) accept-reject with a gamma g(4.3,6.3) candidate.