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: WWTY (News) (News) 21% WDUX WTJW (News) Others 16% WACO (Cheers Reruns) 24% 18% 21% Suppose that in the current rating period, a survey of 2,000 viewers gives the following frequencies: WWTY (News) WDUX WACO WTJW (News) (Cheers Reruns) (News) Others 282 401 470 321 526 Bpicture Click here for the Excel Data File (a) Show that it is appropriate to carry out a chi-square test using these data. Each expected value is 2 (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.) x^2

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