A multinomial experiment was conducted with 4 cells and 400 trials. The results are shown in a table. This data needs to be tested to evaluate if it provides evidence against the null hypothesis that the probabilities of each cell are p1=0.2, p2=0.4, p3=0.1, and p4=0.3. The chi-square statistic needs to be calculated and compared to the critical value at an alpha of 0.05 to determine if the null hypothesis can be rejected.