Question

1) An advertising firm wanted to target television advertisements for people who eat out often. The firm conducted a study in which 75 randomly selected people noted what they watched for a week, and then they were categorized according to the type of show they watched most. They also completed a questionnaire about how often they eat out, and were divided into those that do and do not eat out often. The results were that those in the group that eat out often included 3 who most watched quiz shows, 9 who most watched situation comedies, 7 who most watched movies, 8 who most watched news shows, and 3 who most watched soap operas. Of those who ate out rarely, the figures were 8 quiz show, 6 situation comedy, 13 movie, 3 news show, and 15 soap opera. Use the .05 significance level. What is the expected frequency for those watching situation comedies who rarely ate out?

2) In the study above, what the expected frequency for those watching news shows who ate out often?

3) In the study above, what is χ2? (Do all calculations to 3 decimal places, then round off answer to 1 decimal place)

Answer 1

2)

the expected frequency for those watching news shows who ate out often =4.4

3) chi square = 12.4