A researcher wants to investigate whether single people who own pets are generally happier indil without pets. A mood inventory questionnaire is administered to a group of 20- to 29-year old nor owners and a similar age group of pet owners. The pet owners are matched one to one with the nut owners for income, number of close friendships, and general health. Paired Samples Test Paired Samples Statistics Mean 'N Non-Pet 9 1667 2 22360 90JH2 Mean Deviation Mean Cuner Pair I Non-Pet Pet Owner 3.92003 1.60035 2:10090 -1 500