Chi square test of independence
June 18th, 2023
In a particular market there are three commercial television stations, each with its own
evening news program from 6:00 to 6:30 P.M. According to a report in this morning’s local
newspaper, a random sample of 150 viewers last night revealed 53 watched the news on
WNAE (channel 5), 64 watched on WRRN (channel 11), and 33 on WSPD (channel 13). At
the .05 significance level, is there a difference in the proportion of viewers watching the
three channels?