1. Researchers test an app to encourage college students to take breaks when working on computers. The students assigned to use the app spend an average of 45 minutes before they take a break compared to students not using the app who spend 75 minutes on average before they take a break. Alpha = .05. The p value of the statistical test to analyze the hypothesis that students using the app take more computer breaks than those who don't is 0.023. What can you conclude from this information? (Select all that apply)
   1. An independent t-test would be appropriate to compare the group means.
   2. The null hypothesis was rejected.
   3. There is no chance of a Type 2 error.
   4. Power = 80%