Reena is interested in the probability that she makes a ball…

Reena is interested in the probability that she makes a ball while playing pool. She has found that each of her shots in a game of pool amounts to an independent trial and that P(x = 3) = 0.01 for X~G(0.6).  What do the values of 0.6 and 0.01 mean for this distribution in this situation?