landr Yinelenemez Kaydet Example 9.13: A study published in Chemosphere reported the levels of the dioxin TCDD of 10 Massachusetts Vietnam veterans who were possibly exposed to Agent Orange. The TCDD levels in plasma and in fat tissue are listed in Table 9.1. Find a 90% onfidence interval for , where and 2 represent the true mean TCDD levels in plasma and in fat tissue, respectively. Assume the distribution of the differences to be approximately normal. NOTE: According to the original example, the number of samples is 10 and the confidence interval will be 90%, not 95%. Finding the correct number from Table A.4 below is also part of this problem. Veteran TCDD Levels in TCDD Levels in Plasma Fat Tissue di 1234567890 2.5 4.9 -2.4 3.1 5.9 -2.8 2.1 4.4 -2.3 3.5 6.9 -3.4 3.1 7.0 -3.9 1.8 4.2 2.4 6.0 10.0 -4.0 3.0 5.5 -2.5 36.0 4.7 41.0 4.4 -5.0 0.3 Table A.4 Critical Values of the t-Distribution a 212345678 0.40 0.30 0.20 0.15 0.10 0.05 0.025 0.325 0.727 1.376 1.963 3.078 6.314 12.706 0.289 0.617 1.061 1.386 1.886 2.920 4.303 0.277 0.584 0.978 1.250 1.638 2.353 3.182 0.271 0.569 0.941 1.190 1.533 2.132 2.776 0.267 0.559 0.920 1.156 1.476 2.015 2.571 0.265 0.553 0.906 1.134 1.440 1.943 2.447 0.263 0.549 0.896 1.119 1.415 1.895 2.365 0.262 0.546 0.889 1.108 1.397 1.860 2.306 9 0.261 0.543 0.883 1.100 1.383 1.833 2.262 10 0.260 0.542 0.879 1.093 1.372 1.812 2.228 11 0.260 0.540 0.876 1.088 1.363 1.796 2.201 12 0.259 0.539 0.873 1.083 1.356 $ 1.782 2.179 13 0.259 0.538 0.870 1.079 1.350 1.771 2.160 14 0.258 0.537 0.868 1.076 1.345 1.761 2.145 15 0.258 0.536 0.866 1.074 1.341 1.753 2.131 16 0.258 0.535 0.865 1.071 1.337 1.746 2.120 17 0.257 0.534 0.863 1.069 1.333 1.740 2.110 18 0.257 0.534 0.862 1.067 1.330 1.734 2.101 19 0.257 0.533 0.861 1.066 1.328 1.729 2.093