(a) Find the t-value such that the area in the right tail is 0.10 with 25 degrees of
Chapter 9, Problem 7(choose chapter or problem)
(a) Find the t-value such that the area in the right tail is 0.10 with 25 degrees of freedom. (b) Find the t-value such that the area in the right tail is 0.05 with 30 degrees of freedom. (c) Find the t-value such that the area left of the t-value is 0.01 with 18 degrees of freedom. [Hint: Use symmetry.] (d) Find the critical t-value that corresponds to 90% confidence. Assume 20 degrees of freedom.
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