With a df = 20, and $\alpha$ = 0.05 and a referencing table value of 1.74742, the upper tail suggests that P(T₂₀ $\ge$ 1.74742) = 0.05.

Name: With a df = 20, and $\alpha$ = 0.05 and a referencing table value of 1.74742, the upper tail suggests that P(T 20 $\ge$ 1.74742) = 0.05.
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The referencing table value of 1.74742 corresponds to the upper 5% critical value for a t-distribution with 20 degrees of freedom. Therefore, the probability of observing a t-statistic greater than 1.74742 is 0.05.

With a Df = 20, And α\alphaα = 005 and a Referencing Table Value of 1

With a Df = 20, And $\alpha$ = 005 and a Referencing Table Value of 1