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In a random sample of 64 audited estate tax returns, it was determined that the mean amount of additional tax owed was $3476 with a standard deviation of $2588. Construct and interpret a 90% confidence interval for the mean additional amount of tax owed for estate tax returns. Click the icon to view the t-distribution table. The lower bound is $. (Round to the nearest dollar as needed.)

In a random sample of 64 audited estate tax returns, it was determined that the mean amount of additional tax owed was $3476 with a standard deviation of $2588. Construct and interpret a 90% confidence interval for the mean additional amount of tax owed for estate tax returns. Click the icon to view the t-distribution table. The lower bound is $. (Round to the nearest dollar as needed.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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In a random sample of 64 audited estate tax returns, it was determined that the mean amount of additional tax owed was $3476 with a standard deviation of $2588. Construct and interpret a 90% confidence interval for the mean additional amount of tax owed for estate tax returns. Click the icon to view the t-distribution table. The lower bound is $. (Round to the nearest dollar as needed.)
Transcribed Image Text:In a random sample of 64 audited estate tax returns, it was determined that the mean amount of additional tax owed was $3476 with a standard deviation of $2588. Construct and interpret a 90% confidence interval for the mean additional amount of tax owed for estate tax returns. Click the icon to view the t-distribution table. The lower bound is $. (Round to the nearest dollar as needed.)
i t-distribution Table (-Distribution Area in Right Tail df 0.25 0.20 0.15 0.10 0.05 0.025 0.02 0.01 0,005 0.0025 0.001 0.0005 1 1.000 2 0.816 3 0.765 4 0.741 5 0,727 1.376 1.061 0.978 0.941 0.920 1.963 1.386 1.250 1.190 1.156 3.078 1.886 1.638 1.533 1.476 6.314 2.920 2.353 2.132 2.015 12.706 4.303 3.182 2.776 2.571 15,894 4.849 3.482 2.999 2.757 31.821 6.965 4.541 3.747 3.365 63.657 9.925 5.841 4.604 4.032 127.321 14.089 7.453 5.598 4.773 318.309 22.327 10.215 7.173 636.619 31.599 12.924 8.610 5,893 6.869 0.718 0,711 8 3.143 2.998 2.896 2.821 2.764 0.906 0.896 1.134 1.440 1.119 1.415 1.397 1.943 1.895 1.860 2.447 2.365 2.306 2.262 2.228 2.612 2.517 2.449 2.398 2.359 3.707 3.499 3.355 3.250 3.169 4.317 4.029 3.833 5.208 4.785 4.501 4.297 4.144 5.959 5.408 0.706 9 5.041 4.781 4.587 0.889 1.108 0.883 0.879 1.383 0.703 0.700 1.100 1.833 1.812 3.690 3.581 10 1.093 1.372 0.697 0.695 0.694 0.692 0.691 4.437 4.318 4.221 4.140 4.073 0.876 0.873 11 12 13 0.870 0.868 0.866 1.088 1.083 1.079 1.363 1.356 1.350 1.796 1.782 1.771 1.761 1.753 2.201 2.179 2.160 2.145 2.131 2.328 2.303 2.282 2.718 2.681 2.650 2.624 2.602 3.106 3.055 3,012 2.977 2.947 3.497 3.428 3.372 3.326 3.286 4.025 3.930 3.852 3.787 3.733 1.345 1.341 2.264 2.249 14 1.076 1.074 15 0.865 0.863 0.862 0.861 0.860 2.583 2.567 2.552 2.539 2.528 2.921 2,898 2.878 2.861 2.845 4.015 3.965 3.922 3.883 3.850 16 17 0.690 0.689 1.071 1.069 1.067 1.066 1.064 1.337 1.333 1.330 1.328 1.325 1.746 1.740 1.734 1.729 1.725 2.120 2.110 2.101 2.093 2.086 2.235 2.224 2.214 2.205 2.197 3.252 3.222 3.197 3.174 3.153 3.686 3.646 3.610 3.579 3.552 18 0.688 19 0.688 0.687 20 0.859 0.858 0.858 0.857 2.080 2.074 2.069 2.064 2.060 3.819 3.792 3.768 3.745 3.725 1.063 1.061 1.323 1.321 3.135 3.119 21 22 23 24 25 0.686 0.686 0.685 0,685 0.684 1.319 1.318 1,316 1.721 1.717 1.714 1.711 1.708 2.189 2.183 2.177 2.172 2.167 2.518 2.508 2.500 2.492 2.485 2.831 2.819 2.807 2.797 2.787 3.527 3.505 3.485 3.467 3.450 1.060 3.104 3091 1.059 1.058 0.856 3.078 2.779 2.771 2.763 2.756 2.750 0.856 0.855 1.706 1.703 1.701 1,699 1.697 3.707 3.690 3.674 3.659 3.646 26 27 0.684 1.058 1.057 1.056 1.055 1.055 2.056 2.052 2.048 2.045 2.042 2.162 2.158 2.154 2.150 2.147 2.479 2.473 2.467 2.462 2.457 3.067 3.057 3.047 3.038 3.030 3.435 3.421 1.315 1.314 1.313 1.311 1310 0.684 3,408 3.396 3.385 28 0.683 29 30 0.855 0.854 0.854 0.683 0.683 2.744 2.738 0.682 0,682 0.682 0.682 0.682 1.054 1.054 1.053 1.052 1.052 1.309 1.309 1.308 1.307 1.306 1.696 1.694 1.692 1.691 1.690 3.375 3.365 3.356 3.348 3.340 0.853 0.853 2.040 2,037 2.035 2.032 2.030 2.144 2.141 2.138 2.136 2.133 2.453 2.449 2.445 2.441 2.438 3.022 3.015 3.633 3.622 31 32 33 34 35 0.853 0.852 0.852 2.733 2.728 2.724 3.008 3.002 2.996 3.611 3.601 3.591 36 37 38 39 40 0.681 0.681 0.681 0,681 0.681 0.852 0.851 0.851 0.851 0.851 1.052 1.306 1.051 1.305 1.051 1.304 1.050 1.688 1.687 1.686 1.685 1.684 2.028 2.026 2.024 2.023 2.021 2.131 2.129 2.127 2.125 2.123 2.434 2.431 2.429 2.426 2.423 3.333 3.326 3.319 3.313 3.307 3.582 3.574 3.566 3.558 3.551 2.719 2.715 2.712 2.708 2.704 2.990 2.985 2.980 2.976 2.971 1.304 1.303 1.050 0.849 0.848 0.847 0.846 0.846 1.676 1.671 1.667 1.664 1.662 2.009 2.000 1.994 1.990 1.987 3.261 3.232 3.211 3.195 3.183 3.496 3.460 3.435 3.416 3.402 50 0,679 0.679 0.678 0.678 1.047 1.045 1.044 1.043 1.042 1.299 1.296 1.294 1.292 1.291 2.109 2.099 2.093 2.088 2.084 2.403 2.390 2.381 2.374 2.368 2.678 2,660 2.648 2.639 2.632 2.937 2.915 2,899 2.887 2.878 60 70 80 90 0.677 0.677 0.675 0.674 1.984 1.962 1.960 2.871 2.813 2.807 3.174 3.098 3.090 1.042 1.290 100 1000 0.845 0.842 0.842 1.660 1.646 1.645 2.081 2.056 2.054 2.364 2.330 2.326 2.626 2.581 2.576 3.390 3.300 3.291 ur answer i ? 1.037 1.282 1.036 1.282 swer ning 0.0005 0,25 0.20 0.15 0.10 0.05 0.025 0.02 0.01 0.005 0,0025 0.001 JP Print Done
Transcribed Image Text:i t-distribution Table (-Distribution Area in Right Tail df 0.25 0.20 0.15 0.10 0.05 0.025 0.02 0.01 0,005 0.0025 0.001 0.0005 1 1.000 2 0.816 3 0.765 4 0.741 5 0,727 1.376 1.061 0.978 0.941 0.920 1.963 1.386 1.250 1.190 1.156 3.078 1.886 1.638 1.533 1.476 6.314 2.920 2.353 2.132 2.015 12.706 4.303 3.182 2.776 2.571 15,894 4.849 3.482 2.999 2.757 31.821 6.965 4.541 3.747 3.365 63.657 9.925 5.841 4.604 4.032 127.321 14.089 7.453 5.598 4.773 318.309 22.327 10.215 7.173 636.619 31.599 12.924 8.610 5,893 6.869 0.718 0,711 8 3.143 2.998 2.896 2.821 2.764 0.906 0.896 1.134 1.440 1.119 1.415 1.397 1.943 1.895 1.860 2.447 2.365 2.306 2.262 2.228 2.612 2.517 2.449 2.398 2.359 3.707 3.499 3.355 3.250 3.169 4.317 4.029 3.833 5.208 4.785 4.501 4.297 4.144 5.959 5.408 0.706 9 5.041 4.781 4.587 0.889 1.108 0.883 0.879 1.383 0.703 0.700 1.100 1.833 1.812 3.690 3.581 10 1.093 1.372 0.697 0.695 0.694 0.692 0.691 4.437 4.318 4.221 4.140 4.073 0.876 0.873 11 12 13 0.870 0.868 0.866 1.088 1.083 1.079 1.363 1.356 1.350 1.796 1.782 1.771 1.761 1.753 2.201 2.179 2.160 2.145 2.131 2.328 2.303 2.282 2.718 2.681 2.650 2.624 2.602 3.106 3.055 3,012 2.977 2.947 3.497 3.428 3.372 3.326 3.286 4.025 3.930 3.852 3.787 3.733 1.345 1.341 2.264 2.249 14 1.076 1.074 15 0.865 0.863 0.862 0.861 0.860 2.583 2.567 2.552 2.539 2.528 2.921 2,898 2.878 2.861 2.845 4.015 3.965 3.922 3.883 3.850 16 17 0.690 0.689 1.071 1.069 1.067 1.066 1.064 1.337 1.333 1.330 1.328 1.325 1.746 1.740 1.734 1.729 1.725 2.120 2.110 2.101 2.093 2.086 2.235 2.224 2.214 2.205 2.197 3.252 3.222 3.197 3.174 3.153 3.686 3.646 3.610 3.579 3.552 18 0.688 19 0.688 0.687 20 0.859 0.858 0.858 0.857 2.080 2.074 2.069 2.064 2.060 3.819 3.792 3.768 3.745 3.725 1.063 1.061 1.323 1.321 3.135 3.119 21 22 23 24 25 0.686 0.686 0.685 0,685 0.684 1.319 1.318 1,316 1.721 1.717 1.714 1.711 1.708 2.189 2.183 2.177 2.172 2.167 2.518 2.508 2.500 2.492 2.485 2.831 2.819 2.807 2.797 2.787 3.527 3.505 3.485 3.467 3.450 1.060 3.104 3091 1.059 1.058 0.856 3.078 2.779 2.771 2.763 2.756 2.750 0.856 0.855 1.706 1.703 1.701 1,699 1.697 3.707 3.690 3.674 3.659 3.646 26 27 0.684 1.058 1.057 1.056 1.055 1.055 2.056 2.052 2.048 2.045 2.042 2.162 2.158 2.154 2.150 2.147 2.479 2.473 2.467 2.462 2.457 3.067 3.057 3.047 3.038 3.030 3.435 3.421 1.315 1.314 1.313 1.311 1310 0.684 3,408 3.396 3.385 28 0.683 29 30 0.855 0.854 0.854 0.683 0.683 2.744 2.738 0.682 0,682 0.682 0.682 0.682 1.054 1.054 1.053 1.052 1.052 1.309 1.309 1.308 1.307 1.306 1.696 1.694 1.692 1.691 1.690 3.375 3.365 3.356 3.348 3.340 0.853 0.853 2.040 2,037 2.035 2.032 2.030 2.144 2.141 2.138 2.136 2.133 2.453 2.449 2.445 2.441 2.438 3.022 3.015 3.633 3.622 31 32 33 34 35 0.853 0.852 0.852 2.733 2.728 2.724 3.008 3.002 2.996 3.611 3.601 3.591 36 37 38 39 40 0.681 0.681 0.681 0,681 0.681 0.852 0.851 0.851 0.851 0.851 1.052 1.306 1.051 1.305 1.051 1.304 1.050 1.688 1.687 1.686 1.685 1.684 2.028 2.026 2.024 2.023 2.021 2.131 2.129 2.127 2.125 2.123 2.434 2.431 2.429 2.426 2.423 3.333 3.326 3.319 3.313 3.307 3.582 3.574 3.566 3.558 3.551 2.719 2.715 2.712 2.708 2.704 2.990 2.985 2.980 2.976 2.971 1.304 1.303 1.050 0.849 0.848 0.847 0.846 0.846 1.676 1.671 1.667 1.664 1.662 2.009 2.000 1.994 1.990 1.987 3.261 3.232 3.211 3.195 3.183 3.496 3.460 3.435 3.416 3.402 50 0,679 0.679 0.678 0.678 1.047 1.045 1.044 1.043 1.042 1.299 1.296 1.294 1.292 1.291 2.109 2.099 2.093 2.088 2.084 2.403 2.390 2.381 2.374 2.368 2.678 2,660 2.648 2.639 2.632 2.937 2.915 2,899 2.887 2.878 60 70 80 90 0.677 0.677 0.675 0.674 1.984 1.962 1.960 2.871 2.813 2.807 3.174 3.098 3.090 1.042 1.290 100 1000 0.845 0.842 0.842 1.660 1.646 1.645 2.081 2.056 2.054 2.364 2.330 2.326 2.626 2.581 2.576 3.390 3.300 3.291 ur answer i ? 1.037 1.282 1.036 1.282 swer ning 0.0005 0,25 0.20 0.15 0.10 0.05 0.025 0.02 0.01 0.005 0,0025 0.001 JP Print Done
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