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) 15% WWTY WACO WTJW (News) (Cheers Reruns) 19 24 (News) Others 19 238 Suppose that in the current rating period, a survey of 2,000 viewers gives the following frequencies: WDUX WWTY WACO 445 WTJW (News) (News) (Cheers Reruns) (News) Others 284 414 352 505 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 HO. Conclude viewing shares of the current rating period from those of the last. 23 % of Viewers of TV channels % of Viewers, Last Rating Frequencies, Current Rating 456 4 Channels Period Period 5 WDUX (news) 15% 284 6 WWTV (news) 19% 414 7 WACO (Cheers Reruns) 24% 445 8 WTJW (news) 19% 352 9 Others 23% 505 10 11