Х Observed and expected frequencies Observed frequencies: E Population A B Yes No 18 20 22 20 Expected frequencies: Yes

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Х Observed and expected frequencies Observed frequencies: E Population A B Yes No 18 20 22 20 Expected frequencies: Yes No í Population А 19 19 B 21 21 Print Done

Table of chi-square critical values X AREA IN RIGHT TAIL OF DISTRIBUTION df 0.995 0.99 0.95 0.01 1 2 3 0.975 0.001 0.051 0.216 0.484 0.831 1.237 0.90 0.016 0.211 0.584 1.064 1.610 2.204 0.004 0.103 0.352 0.711 1.145 1.635 4 5 6 7 0.010 0.072 0.207 0,412 0.676 0.989 1.344 1.735 2.156 2.603 3.074 3.565 4.075 8 9 0.020 0.115 0.297 0.554 0.872 1.239 1.646 2.088 2.358 3.053 3.571 4.107 4.660 5.229 0.025 5.024 7.378 9.348 11.143 12.833 14.449 16.013 17.535 19.023 1.690 2.180 2.700 3.247 3.816 4,404 2.167 2.733 3.325 3.940 4.575 5.226 0.10 2.706 4.605 6,251 7.779 9.236 10.645 12.017 13.362 14.684 15.987 17.275 18.549 19.812 21.064 22.307 2.833 3.490 4.168 4.865 5.578 6.304 0.05 3.841 5.991 7.815 9.488 11.070 12.592 14,067 15.507 16.919 18.307 19.675 21.026 22.362 23.685 24.996 6.635 9.210 11.345 13.277 15.086 16.812 18.475 20.090 21.666 23.209 24.725 26.217 27.688 29.141 30.578 0.005 7.879 10.597 12.838 14.860 16.750 18.548 20.278 21.955 23.589 25.188 26.757 28.300 29.819 31.319 32.801 10 20.483 21.920 23.337 11 12 13 14 5.009 5.629 5.892 6.571 7.261 7.042 7.790 8.547 24.736 26.119 27.488 15 4.601 6.262 Print Done

Using the accompanying data below. perform a chi-square tost using a +0.05 to determine if the proportion of "Yes" observations differs between Populations A and B Click the icon to view the observed and expected frequencies. Click the icon to view an excerpt from the table of chi-square critical values, What are the null and alternative hypotheses? A HO PAPA HADAP OB HOPA-P HAPAPB OCH PAPB HPAPPB OD HOPAP HA PAP What is the best statistic? y2-(Round to two decimal places as needed.) What is the critical value? 4 - (Round to three decimal places as needed.) What is the correct conclusion? O A. Do not reject Hy. There is enough evidence to conclude that the population proportions are different, OB. Reject Ho. There is not enough evidence to conclude that the population proportions are different OC. Do not reject Ho. There is not enough evidence to conclude that the population proportions are different OD. Reject Ho. There is enough evidence to conclude that the population proportions are different