Part 1 of 2 a Find the critical value s assuming that the population variances are equal Use the t distribution table to find the critical value s for the indicated alternative hypotheses level of significance a and sample sizes n and n Assume that the samples are independent normal and random Answer parts a and b Ha 1 0 20 n 18 n 8 XXX O Points 0 of 1 Type an integer or decimal rounded to three decimal places as needed Use a comma to separate answers as needed Save