2. You are conducting a study in which you are comparing the happiness levels of psychology majors vs not psychology majors. You collect the following data: Psy Major Not Psy Major 12 10 14 11 15 12 11 9 16 10 a. What is the IV?? What is the DV? b. What is the null and alternative hypothesis? c. What type of test should be used to analyze these results? d. Alpha is set to .05. What are the df? What is t-critical? e. Conduct the appropriate analysis (Std. error = 1.06; Shat/Spooled = 1.67). f. Calculate and interpret d. g. Calculate the confidence interval around the mean difference. h. Interpret the results. Be sure to include all information you have and explain in sentence format.