Identify H1 as one or two-tailed a. This is a two-tailed test Specify alpha level (level of significance) a. Alpha level = .05 Specify Degrees of Freedom (n 1) 21. Degrees of freedom = 9 (note that SPSS will also give you this) Identify Critical Value(tam) from the t table (in the appendix) a. Critical value = +/- 2.262 Calculate t-score(mbt) using SPSS (this has been done for you and the results are given below: t obt= -3.118