review question

15) A multinomial experiment with k = 4 cells and n = 300 produced the data shown in the following table. 2 3 ni 65 69 80 86 Do these data provide sufficient evidence to contradict the null hypothesis that p 1 = 0.20, p2= 0.20, p3 = 0.30, and p4 = 0.30? Test using a= 0.05. Do the step-by-step process