Consider the following.
(a) Calculate the estimate for the standard error of difference between two independent means for s12 = 15, s22 = 17, n1 = 29, and n2 = 30. (Give your answer correct to two decimal places.)
(b) Calculate the estimate for the standard error of difference between two independent means for s12 = 0.06, s22 = 0.107, n1 = 10, and n2 = 12. (Give your answer correct to four decimal places.)
(c) Calculate the estimate for the standard error of difference between two independent means for s1 = 3.7, s2 = 5.8, n1 = 19, and n2 = 26. (Give your answer correct to two decimal places.)