3. Beckman hypothesized that experience playing video games would improve a person's spatial skills. Each participant's spatial skills were measured. Participants then played video games for two hours...

3. Beckman hypothesized that experience playing video games would improve a

person's spatial skills. Each participant's spatial skills were measured. Participants

then played video games for two hours and their spatial skills were measured again

at the end of the game. The number of correct spatial problems was recorded for

each participant. Analyze the following data, state your null hypothesis, and report

your critical value using α = .05. Interpret your results. sD = 2.8

Before       After
7                 10
5                  6
8                  5
3                  5
4                  7
5                  9
M = 5.33     M = 7