Find the test statistic, t, to test the hypothesis that = ….

Find the test statistic, t, to test the hypothesis that = . The sample statistics are given below.     n1{“version”:”1.1″,”math”:”n1″} = 25            n2{“version”:”1.1″,”math”:”n2″} = 30    x¯1{“version”:”1.1″,”math”:”x¯1″} = 21            x¯2{“version”:”1.1″,”math”:”x¯2″} = 19    s1{“version”:”1.1″,”math”:”s1″} = 1.5            s2{“version”:”1.1″,”math”:”s2″} = 1.9