Margie is practicing for an upcoming tennis tournament. Her first serve is good 20 out of 30 times on average. Margie want probability that her first serve will be good at least four of the next six times she serves. How could she design a simulatior. The scenario can be simulated by rolling a six-sided die ___times. The ______ would represent the number first serves. If the ______appear in a set of outcomes one time each, it would mean that at least four of the that Margie makes.