INTRODUCTION TO T-TESTS

Student's t-distribution with n-1 degrees of freedom. Example. Using t tables (Table T) and/or calculator find or estimate. critical value t7* for 90% confidence level if number of degrees of freedom is 7. one tail probability if t = 2.56 and number of degrees of freedom is 7. two tail probability if t = 2.56 and number of degrees of freedom is 7 ................
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