Question

9.3 Section Exerc Use Critical Values for the Student's t Distribution Table to find the critical value or values for the following values of the significance level a, sample size n, and alternate hypothesis H. Part: 0/4 Part 1 of 4 When a = 0.10, n = 13, and Huu HO-

Answer 1

df = n-1 = 13-1 =12 The level of significance is 0.10. This test is right-tailed. tw cum prob one-tail two-tails df 1 21 1.50 0.50 1.00 175 0.25 0.50 0.20 0.40 0.15 0.30 1.90 0.10 0.20 0.05 0.10 975 0.025 0.05 0.01 0.02 1.995 0.005 0.01 t.m 0.001 0.0005 0.002 0.001 لم قا ل الا ا د 7 8 9 10 11 12 13 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.816 0.765 0.741 0.727 0.718 0.711 0.706 0.703 0.700 0.697 0.695 0.694 1.376 1.061 0.978 0.941 0.920 0.906 0.896 0.889 0.883 0.879 0.876 0.873 0.870 1.963 1.386 1.250 1.190 1.156 1.134 1.119 1.108 1.100 1.093 1.088 1.083 1.079 3.078 1.886 1.638 1.533 1.476 1.440 1.415 1.397 1.383 1.372 1.363 1.356 1.350 6.314 2.920 2.353 2.132 2.015 1.943 1.895 1.860 1.833 1.812 1.796 1.782 1.771 12.71 4.303 3.182 2.776 2.571 2.447 2.365 2.306 2.262 2 228 2.201 2.179 2.160 31.82 6.965 4.541 3.747 3.365 3.143 2.998 2.896 2.821 2.764 2.718 2.681 2.650 63.66 9.925 5.841 4.604 4.032 3.707 3.499 3.355 3.250 3.169 3.106 3.055 3.012 318.31 22.327 10.215 7.173 5.893 5.208 4.785 4.501 4.297 4.144 4.025 3.930 3.852 636.62 31.599 12.924 8.610 6.869 5.959 5.408 5.041 4.781 4.587 4.437 4.318 4.221 From Student'st distribution table, the critical value is t= 1.356.