Considering a popular lottery game, named Superenalotto, we assume the probabilities of the winnings of various categories as parametric coefficients in a proportional linear model in order to verify if the observed winnings are significantly different from the teoretical others. The results do not give any significant deviations that, on the contrary, appear when the winnings of players, that make use of System of stakes, are confronted with the others that gamble without the bonds of System