a) Use the chart in the Appendix B to find Z-scores that correspond to the following values for alpha:

i) .05 for a one-tailed test ii) .01 for a one-tailed test iii) .05 for a two-tailed test iv) .01 for a two-tailed test

b) Now do the same for the t-distribution with 60 df (in other words, for a sample of 61).
If you look at the t-distribution chart, you will see how to calculate the df and use the information to look up the answers.

i) .05 for a one-tailed test ii) .01 for a one-tailed test iii) .05 for a two-tailed test iv) .01 for a two-tailed test