1. A nurse would like to test whether her newly developed intervention is significantly associated with the decreasing number of unscheduled visits in her clinic. She developed an intervention education program for the patients in her clinic and asked the patients to watch the program. She recorded the number of unscheduled visits before giving the intervention and the number after the intervention. Her data is recorded in the following table. Use the 0.05 significance level to test the claim that there is a significant association between the intervention and the unscheduled visit.

	Unscheduled visits	Scheduled visits
Before watching the program	20	100
After watching the program	10	90

1. Calculate the expected counts (show your expected counts below)
2. Calculate the test statistic (show your calculation; keep 2 decimal places)