You are given the following null and alternative hypotheses:

H0: m1 - m2 = 0 HA: m1 - m2  0 and the following sample information:

Sample 1 Sample 2 n1 = 125 n2 = 120 s1 = 31 s2 = 38 x1 = 130 x2 = 105

a. Develop the appropriate decision rule, assuming a significance level of 0.05 is to be used.

b. Test the null hypothesis and indicate whether the sample information leads you to reject or fail to reject the null hypothesis. Use the test statistic approach.