A cereal company is putting 1 of 3 prizes in each box of cereal. The prizes are evenly distributed so the probability of winning any given prize is always 1/3 Mohamed wonders how many boxes he should expect to buy to get all 3prizes. He carried out 24 trials of a simulation and his results are shown below. Each dot represents how many boxes it took to get all 3 prizes in that trial.
Use his results to estimate the probability that it takes more than 3 boxes to get all 3 prizes.
Give your answer as either a fraction or a decimal.
P(more than 3 boxes)= ?