Expected Counts in Two-Way Tables Practice Test

A study examined the relationship between pet ownership (dog, cat, no pet) and allergy status (yes, no) in a random sample of 600 people. In the sample, 250 people owned a dog, 150 owned a cat, and 200 had no pet. A total of 180 people reported having allergies.

Data was collected to see if there is an association between the day of the week and the number of customers at a restaurant. A random sample of 200 days was observed. The totals are: 80 weekdays and 120 weekend days. The customer traffic was categorized as Low, Medium, or High. There were 50 days with Low traffic, 90 with Medium, and 60 with High. On weekdays, there were 30 days with Low traffic.