Business, 06.04.2020 19:57 unknown6669

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
18% 21% 24% 16% 21%

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
282 401 470 321 526

a. Show that it is appropriate to carry out a chi-square test using these data.
b. Test to determine whether the viewing shares in the current rating period differ from those in the last rating period at the 0.10 level of significance. What do you conclude?

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Last rating period, the percentages of viewers watching several channels between 11 p. m. and 11:30...

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