Question:

a. Find the t-value such that the area in the right tail is 0.02 with 19 degrees of freedom.

b. Find the t-value such that the area in the right tail is 0.10 with 32 degrees of freedom.

c. Find the t-value such that the area left of the t-value is 0.05 with 6 degrees of freedom. (Hint: Use symmetry.)

d. Find the critical t-value that corresponds to 95% confidence. Assume 16 degrees of freedom.