The implication of the distribution of marbles is too significant to dismiss this phenomenon as just randomness and their results, or simply luck. Therefore, it is essential to have a reliable basis for the premise that marbles distribution is unbiased. In the case of the binomial distribution, there is no limit to the number of trials, and the more trials, the closer to the normal distribution. However, for a probability distribution with a limited number of trials, such as a hypergeometric distribution, the distribution of marbles must be more evenly, i.e., unbiased, than a binomial distribution. It is possible to adjust the hypergeometric distribution to fit the normal distribution from the initial state by sampling several times. Still, in this case, it is a fact that someone may already know the result.