Please answer a through d.

Determine the appropriate critical value(s) for each of the following tests concerning the population mean: a. upper-tailed test: 0: = 0.025; n = 36; e = 4.0 b. lower-tailed test: a = 0.01; n = 30; s = 7.0 c. two-tailed test: on = 0.02; n = 41; s = 6.5 d. two-tailed test: a = 0.10; n = 25; 0' = 5.9 a. Determine the appropriate critical value for an upper-tailed test: a = 0.025; n = 36; a = 4.0. The critical value(s) is(are) :|. (Round to two decimal places as needed. Use a comma to separate answers as needed.)