In: Math
Find the t-value such that the area in the right tail is 0.025 with 9 degrees of freedom. nothing (Round to three decimal places as needed.) (b) Find the t-value such that the area in the right tail is 0.25 with 29 degrees of freedom. nothing (Round to three decimal places as needed.) (c) Find the t-value such that the area left of the t-value is 0.15 with 7 degrees of freedom. [Hint: Use symmetry.] nothing (Round to three decimal places as needed.) (d) Find the critical t-value that corresponds to 60% confidence. Assume 13 degrees of freedom. nothing (Round to three decimal places as needed.)