Male Female n1= 12 n2= 8 M1= 99.17 M2 = 67.25 SS,= 62.73 SS2 = 38.297 df = n1 +n2 -2 = 12 +8-2 df = 18 Level a = 0.10 A) The null hypothesis ( Ho): 1-42 = 0 B) The alternative hypothesis ( H1) 1- H2 #0 C) The critical value : t = 2.101 D) The test statistics : Detail calculations

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