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% 20% 25% 20% 17%   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 263 442 560 309 426

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 4DGP
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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% 20% 25% 20% 17%
 


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
263 442 560 309 426
 

 

 Click here for the Excel Data File

 

(a) Show that it is appropriate to carry out a chi-square test using these data.

 

 


 

(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.)

 

 

 

 
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