Consider a multinomial experiment with n = 250 and k = 4. The null hypothesis to be tested is H0: p1 = p2 = p3 = p4 = 0.25. The observed frequencies resulting from the experiment are (Use Table 3): Category 1 2 3 4 Frequency 70 42 72 66 b. Calculate the value of the test statistic. (Round intermediate calculations to 4 decimal places and your final answer to 2 decimal places.) 2df c. Calculate the critical value at a 5% significance level. (Round your answer to 3 decimal places.) 2,df