- 18 During The First Few Weeks Of The New Television Season The Evening News Audience Proportions Were Recorded As Abc 1 (75.57 KiB) Viewed 22 times
18. During the first few weeks of the new television season, the evening news audience proportions were recorded as ABC: 31%, CBS: 34%, and NBC: 35%. A sample of 600 homes yielded the following viewing audience data. Number of Homes 150 ABC CBS 200 NBC 250 We want to determine whether or not there has been a significant change in the viewing audience of the three networks. The p-value for this test equals: a. 0.0051 b. 0.9949 c. 0.9993 d. 0.0007 19. The results of a recent study regarding smoking and three types of illness are shown in the following table. Non-Smokers 20 Smokers 60 Totals 80 Illness Emphysema Heart problem Cancer Totals 70 80 150 30 40 70 120 180 300 We are interested in determining whether or not illness is independent of smoking. The p-value for this test equals: a. 0.0052 b. 0.9948 c. 0.1052 d. 0.8948 20. To answer questions 18 and 19 above using the Excel Chi-Square Test, what is the Excel function you used? a. ECHI.TEST b. ECHISQ.DIST c. ECHISQ.TEST d. -CHISQ.INV