Question

Last rating period, the percentages of viewers watching several channels between 11 p.m.. and 11:30 p.m. in a major TV market were as follows:

WDUX (News)	WWTY (News)	WACO (Cheers Reruns)	WTJW (News)	Others
15%	19%	22%	16%	28%

Suppose that in the current rating period, a survey of 2,000 viewers gives the following frequencies:

WDUX (News)	WWTY (News)	WACO (Cheers Reruns)	WTJW (News)	Others
182	536	354	151	777

(a) Show that it is appropriate to carry out a chi-square test using these data and calculate the value of the test statistic.

Each expected value is ≥        

x2x2 =        

(b) Determine whether the viewing shares in the current rating period differ from those in the last rating period at the .10 level of significance. (Round your answer to 3 decimal places.)

(Click to select)Do not rejectReject H₀. Conclude viewing shares of the current rating period (Click to select)do not differdiffer from those of the last.

rev: 01_02_2019_QC_CS-152394

Answer 1

15 . 19% 오오 % 6y. 2&X Svo 980 44 0 3Lo 560 JACO 182 536 36Y 151 77? a) To kar vleue oduw

table 300 380 440 320 560 82 536 354 15 1 46,4 64.0 6.8 89.25 84,o9 3911 24336 396 28 56 717 206

Chl-Square (2) Distribution Area to the Right of Critical Value Degrees of Freedom 0.99 0.975 0.95 0.90 0.10 0.05 0.025 0.01 6.635 9.210 9.348 11345 9488 .143 13.277 9.236 11.07 12.833 15.086 0.872 1237 1635 2.204 10.645 12.592 14.449 16.812 1690 2.167 2.833 12.017 14.067 16.013 18.475 2.706 4.605 6.251 7.779 0001 0.004 0.016 0020 005 0.103 0.211 0.115 0.216 0.352 0.584 1.064 1.610 3.841 5.991 7.815 5.024 7.378 0.297 0484 0.711 0554 0831.14 1.646 2.180 2.733 3.490 13.362 5.507 17.535 20.09 2.088 2.700 3.325 4.168 14.684 16.919 19.023 21.666 2558 3.247 3.940 4.865 15.987 18.307 20.483 23.209 .053 38164.575 5.578 17.275 19.675 21.92024.725 18.549 21.026 23.337 26.217 19.812 62 24.736 27.688 4.660 5.629 6.57 .79021.064 23.685 26.119 29.141 5.229 6.262 7.261 8.547 22.307 24.996 27.488 30.578 10 12 357 4404 5.226 6.304 5.009 5.892 13 15 17 4.107 7.042 5.812 6.908 7962 9.312 23.542 26.296 28.845 32.000 6.408 7.564 8.672 10.085 24.769 27.587 30.191 33.409 7.015 8.231 9.390 10.865 25.989 28.869 31.526 34.805 7.633 8.907 10.117 11.651 27.204 30.144 32.852 36.191 8.260 9.591 10.851 12.443 28.412 31410 34.170 37.566 8.897 10.283 11.591 13.240 29.615 32.671 35.47938.932 9542 10.982 12.338 14.042 30.813 33.924 36.781 40.289 10.196 .689 13.091 14.848 32.007 35.172 38.076 41.638 10.856 12.401 13.848 15.65933.196 36.415 39.364 42.980 11524 13.120 14.611 16.473 34.382 37.652 40.646 44.314 12.198 13844 15.379 17.292 35.563 38.885 41.923 45.642 12879 14.573 16.151 18.114 36.741 40.113 43.194 46.963 13565 15.308 16.928 18.939 37.916 41.337 44.461 48.278 14.257 16.047 17.708 19.768 39.087 42.557 45.722 49.588 14.954 16.791 18.493 20.599 40.256 43.773 46.979 50.892 18 20 21 23 24 28 30