Question

Full data set Uncarpeted A researcher wanted to determine if carpeted or uncarpeted rooms contain more bacteria. The table shows the results for the number of bacteria per cubic foot for both types of rooms. A normal probability plot and boxplot indicate that the data are approximately normally distributed with no outliers. Do carpeted rooms have more bacteria than uncarpeted rooms at the α 0.01 level of significance? 1 Click the icon to view the Student t-distribution table 13. Carpeted 8.2 9.8 14.5 8.8 8.2 8.3 15.6 6.9 6.8 10.3 7.5 1.7 4.5 7.6 9.81 What are the null and alternative hypotheses? H1:(4) Calculate the test statistic, t (Round to two decimal places as needed.) Now find the critical value. Select the correct choice below and fill in the answer box within your choice (Round to three decimal places as needed.) 12 Do carpeted rooms have more bacteria than uncarpeted rooms at thea-0.01 level of significance? OA. O B. No. because the test statistic is not in the critical region. No, because the test statistic is in the critical region. C. Yes, because the test statistic is in the critical region. O D. Yes, because the test statistic is not in the critical region. right tai Area in Right Tail Degrees of 1.000 1.376 1.963 3AT8 6.314 12.706 15804 31X21 63667 12232 1 318309 636.619 0.816 1.061 1.386 1,886 292D 4303 4849 6.弼9.925 4.089 22 327 31.50 0765 0978 1.250 1638 2.353 3182 3482 4.54 581 7453 10215 1292 0.741 0.041 1.190 1.533 2132 2.776 2999 3.747 4.604 5598 ใ173 8610 0727 0920 1.156 1476 2.015 2.571 2.757 3.365 4032 .735893 686 0718 096 1.134 1.440 1943 2.447 2612 3143 3707 4317 52tH 5999 0711 0.06 1.119 1415 1895 2.365 2517 2.998 349 49 .5 540 0.706 0 1108 1397 1860 2.306 2449 28 3353833 51 5041 0%B α883 1.100 1.383 1833 2.262 2.398 2.821 3.250 300 4297 4781 0.700 0.879 1.093 1.372 1.812 2.228 2359 2.764 3.169 3.581 4.144 4.587 0.697 0876 1088 1363 1.796 2.201 2328 2718 3106 347 4025 44317 0.695 0873 1083 1356 1.72.179 2303 26 3055 342 393 4318 0.64 0870 1079 1350 177 2.160 2282 260 3012 3372 382 221 0.692 0868 1076 1345 1.762.145 2.264 2624 23326 3.787 .140 0.691 0866 1074 134 1753 2.131 2.249 2602 293286 3.733 4073 0.690 0865 1071 1337 1.746 2.120 2.235 253 2921 3252 3686 4015 0.689 063 1069 1333 1.740 2110 2.224 257 288 3222 3646 3965 0.688 0.862 1.067 1.330 1.734 2.101 2.214 2552 287 3197 3610 3922 0.688 0861 1.066 1328 1.729 203 2.20 23 28 3.174 3.579 3883 0.687 0.发01.064 1.325 1.725 2.096 2.197 2.528 2845 3.153 3.552 3850 0686 0859 1063 1323 172 2.080 2189 2518 283.135 3527 3819 0686 0858 106 1321 1717 2.074 2183 2.508 2819 3.119 3505 3.792 0685 0858 1060 1319 1.714 2.069 217 2.50 283.104 3485 3.768 0685 0857 1059 1318 17 2.064 212 2492 2793.091 3467 3.74 0684 0856 1058 1316 1708 2.060 2167 2485 27873078 3450 3.725 0684 0856 1058 1315 1706 2.06 2162 247 27 3067 3435 3.707 0.684 0.855 1.057 1.314 1.703 2.052 2158 2.473 2771 3057 3421 3690 0.683 0.855 1.056 1.313 1.701 2.048 2.154 2.467 2763 3047 3.40 3674 0.683 0854 1055 1311 199 2045 2150 2462 275630 3396 3659 0.683 0854 1055 1310 19 204 2147 2457 2750 30303385 3646 0.682 0853 1054 1309 1696 2.040 2144 2453 2744 3022 3375 3633 0682 0.853 1.054 1.309 1894 2.037 2.141 2.449 2738 3015 3365 3622 0.682 0853 1.053 1.308 1892 2.035 2.138 2.445 27 3008 3.356 3.611 0.682 0.852 1,052 1.307 1891 2.032 2.136 2.441 2728 3002 334s 3601 0.682 0852 1052 1306 1690 2.030 2133 2438 2724 296 3340 3.591 0.681 0852 1052 1306 1688 2028 213 243 2719290 3333 3.582 0.681 0851 105 1305 1687 206 2129 243 2715 29 3.36 3.574 0.681 0851 105 1304 1686 2.0242.127 2429 2712 2980 3319 3.566 0.681 0851 1.050 1.304 1 5 2.023 2.125 2406 2708 2.976 3.313 3558 0.681 0851 1050 1303 1684 2.02 2.123 243 270 2971 3307 3.551 0.679 0849 1.047 1.299 1.676 2.009 2.109 2403 267酱 2.937 3.261 3.496 0.679 0848 1045 1296 1671 2.0 2099 230 2660 2915 3.232 3460 0678 0847 1044 1294 1667 99 2093 238 2648 2932 3435 0.678 0.846 1,043 L292 1664 L950 200恳 2.374 2639 2887 3.195 3.416 0677 0846 1042 129 1662 97 2084 236 2632 2878 3.18 3402 0677 0845 1042 1290 1660 984 20 236 2626 2871 3.174 3.390 0675 0842 1037 1282 1646 962 2056 2.33 2581 2813 3098 3.300 0674 0842 1036 1282 1645 960 2054 2.326 2576 207 3090 3291 Degrees of 25 020 15 0.1 0 02520.0 0005 00023 .001 0005 Freedom Area in Right Tai Harper (2) Hearpet O ano carpet O Ha carpet carpet 008 ons 004 STE 2222 22222 22222 22222 22-2 th uje 006 25 41 ananas"", " " . .. , " " Il-... ooo 12345 6789. I 12 3 4 5 16 17 1 1 28 21 22 24 25 26 27 28 29 32 33 34 35 36 37 36 39 40預碑78辞se

Answer 1

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