Calculate the test statistic and p-value for each sample. Use Appendix C-2 to calculate the p-value. (Negative values should be indicated by a minus sign. Round your test statistic to 2 decimal places and p-value to 4 decimal places.) Test Statistic p-value (a) Ho: IT S .60 versus H1: IT > .60, a = .05, x = 56, n = 80 (b) Ho: IT = .30 versus H1: IT # .30, a = .05, x = 18, n = 40 (c) Ho: IT 2 . 10 versus H1: 17