Step 4 (c) Compute X1 - X2 and the corresponding sample distribution value. Recall that the sample t value when testing the difference of two means is given by the following formula, where x , x, are the sample means, s, s, are the sample standard deviations, and n, , n, are the sizes of the samples from populations 1 and 2. * 1 - X 2 t = n1 We are given that for the first population, a sample of 49 measurements had a mean of 17 and standard deviation 3. For the second population, a sample of 64 measurements had a mean of 19 and standard deviation 4. We identify the values x, = = S1 = and S, = . Then the sample test statistic is X, - X, = Submit Skip (you cannot come back)