(a) How can you find the t value for 10% of the area in each tail for 9 df?
(b) In what way are t values interpreted differently from z values?
(c) Find the t value for 5, 2.5, and 0.5% of the area within each tail for 9 df.
(d) Find the t value for 5, 2.5, and 0.5% of the area within each tail for a sample size, n, that is very large or infinite. How do these t values compare with their corresponding z values?