Assume that you have a sample ot n1 = 8. With the sample mean X1 =49, and a sample standard devtatlon 0t 81 = 4I and you have an Independent sample of n2 = 1? trom another population with a sample mean of i2 = 38 and the sample standard deviation 82 = 5. Complete parts (a) through (d) below. a. What is the value of the pooled-variance tSTAT test statistic for testing H0: p1 2 p2? tsmT : (Round to two decimal places as needed.) b. In nding the critical value. how many degrees of freedom are there? degrees of freedom (Simplify your answer.) c. Using a signicance level of cc: 0.05. what is the critical value for a onetail test of the hypothesis H0: p1 5 p2 against the alternative H1 : p1 > '12? The critical value is (Round to two decimal places as needed.) d. What is your statistical decision? 0 A. Do not reject HD because the computed tSTAT test statistic is less than the uppertail critical value. 0 B. Reject Ho because the computed tsmT test statistic is less than the uppertail critical value. 0 C. Reject Ho because the computed tSTAT test statistic is greater than the uppertail critical value. 0 D. Do not reject Ho because the computed tSTAT test statistic is greater than the upper-tail critical value