7) Depression and Missed Classes Is depression a possible factor in students missing classes? Two of the variables in the dataset Sleep-Study are DepressionScore, which gives score on a standard depression scale with higher numbers indicating greater depression, and ClassesMissed, the number of classes missed during the semester, for a random sample of 253 college students. The research question of goals of the analysis are: a Is there an association between DepressionScore and ClassesMissed? - To use the regression equation to find the predicted number of missing classes if a student has a depression score of 16 and 44. a To use the regression equation to find the mean number of missing classes for students with depression score of 16 and 28. Use an alpha of 0.05 and follow these steps: a) (12 points) Context: Define the response and explanatory variables. Write down your model, hypotheses and describe the type of condence intervals you will be performing. b) (6 points) Conditions: Does the data set satisfy the model assumptions? c) (7 points) Calculations: Include the relevant R-output d) (12 points) Conclusions: Write your conclusions to the questions above. Can you claim a cause-effect relationship between x and y? Why