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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

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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 represent the true mean TCDD levels in plasma and in fat tissue, respectively. Assume the distribution of the differences to be approximately normal. TCDD Levels in TCDD Levels in Veteran Plasma Fat Tissue di 1 2.5 4.9 -2.4 2 3.1 5.9 -2.8 3 2.1 4.4 -2.3 4 3.5 6.9 -3.4 5 3.1 7.0 -3.9 6 1.8 4.2 -2.4 7 6.0 10.0 -4.0 8 3.0 5.5 -2.5 36.0 41.0 -5.0 10 4.7 4.4 0.3 NOT: Orijinal rnee gre number of sample says 10 oldu ve %95 confidence interval deil %90 olacak. Aadaki Table A.4'ten doru sayy bulmak ta bu problemin paras. Table A.4 Critical Values of the t-Distribution a V 0.40 0.30 0.20 0.15 0.10 0.05 0.025 1 0.325 0.727 1.376 1.963 3.078 6.314 12.706 2 0.289 0.617 1.061 1.386 1.886 2.920 4.303 3 0.277 0.584 0.978 1.250 1.638 2.353 3.182 4 0.271 0.569 0.941 1.190 1.533 2.132 2.776 5 0.267 0.559 0.920 1.156 1.476 2.015 2.571 6 0.265 0.553 0.906 1.134 1.440 1.943 2.447 7 0.263 0.549 0.896 1.119 1.415 1.895 2.365 8 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

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