Consider two independent random samples of sizes My = 12 and 1= = 12, taken from two normally distributed populations . The sample standard deviations are calculated to be 5 = 35.4 and 5= = 38. 2, and the sample means are * = _ 5.7 land In = - 0. 245, respectively . Using this information , test the null hypothesis HO : HI = Mgagainst the two - sided alternative* HA : " I* My, using the Welch Approximate $ Procedure !\f