A technician is tasked with verifying fairness of a lottery ball machine. The lottery ball machine is designed to select a ball at random from the available pool of lottery balls having a number value between one and fifty. The technician operates the machine and makes a thousand draws of lottery ball from the machine, recording the number drawn each time. The total occurrences for each value are then tallied. Which statistical test should the technician use to determine whether the lottery ball machine selects each numbered ball with equal probability