Nishiura High school's ace pitcher, Ren Mihashi has 4 breaking balls which he uses during official games in the latest summer baseball tournament, their rival team coach was able to record the pitches he used in 80 randomly selected throws. Curveball Slider Fastball Shoot 25 10 32 13 a. Define the multinomial random variables and estimate the parameters of the distribution. b. Assuming that the pitches are equally used in a game, what is the probability that out of 12 pitches, Fastball will be used half the time and the rest of the breaking balls twice?

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