Test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent sımple random samples. Use a significance level of a = 0.01 =...

Extracted text: Test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent sımple random samples. Use a significance level of a = 0.01 = 24.5, s1 = 8 Sample 1: nj = 20, x1 Sample 2: n2 = 4, x2 = 23.6, 82 = 3.65 (a) The degree of freedom is (note: use the Welch-Satterthwait degrees of freedom formula from my notes.) (b) The standardized test statistic is