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 WWTY WTJW (News) (News) (Cheers Reruns) (News) Others 168 198 16% 258 WACO Suppose that in the current rating period, a survey of 2,000 viewers gives the following frequencies: WDUX WWTY (News) (News) (Cheers Reruns) 335 495 Each expected value is 2 248 x^2 = WACO 444 picture Click here for the Excel Data File (a) Show that it is appropriate to carry out a chi-square test using these data. WTJW (News) 378 Others 348 (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.) HO. Conclude viewing shares of the current rating period from those of the last.

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A: Topic:- geometry