After students were not doing so well in hermath class, Mrs.Stevens decided to try a different approach and use verbal positive reinforcement at least once every hour. Use the following results to find a95%95%confidence interval for the true mean change in the students' test scores after Mrs.Stevens started using positive reinforcement. Assume that the population distribution of the paired differences is approximatelynormally distributed. Round to onedecimal place.

Student	Without Reinforcement	With Reinforcement
1	6464	8080
2	7373	7474
3	6060	6767
4	6262	8181
5	4848	5050
6	7474	8888