(1 point) Test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples.
Sample 1: $n_1 = 22$, $ar{x}_1 = 19$, $s_1 = 3.5$.
Sample 2: $n_2 = 16$, $ar{x}_2 = 15$, $s_2 = 1.5$.
(a) The test statistic is 4.790
(b) Find the t critical value for a significance level of 0.05 for an alternative hypothesis that the first population has a larger mean (one-sided test): $t^* =$
0.99996833
(c) The conclusion is