Having trouble with this one

PSYC 515.SPSS M2 Scenario-1a A psychologist at a private mental health facility was asked to determine whether there was a clear difference in the length of stay for patients with different categories of diagnosis. Looking at the last seven patients in each of the three major categories, the results (in terms of weeks of stay) were as follows. "Using the data below, test whether the length of stay for patients vary based on category of diagnosis. "Diagnosis Category ta Affective Disorders ta Cognitive Disorders t Drug-related Conditions 7a 120 80 10 120 6a 110 10a 110 9a 100 110 9a 120 1. In this specific scenario, what is the independent variable? Is it between or within subjects? How a many levels does it have, and what are they? ANSWER a 2. Paste all relevant statistical output in the space provided below: ANSWER Create an appropriate graph in SPSS and paste it in the space provided below: ANSWER 4. Present the results using APA format. This includes a full write-up to include a complete statistical notation as shown in the weekly presentations. The write-up also needs interpretation. If significant, state how. If it is not significant, what does that mean in layman's terms? Additional examples of APA results sections are also available in the "Helpful Hints" document. (5 pts) ANSWER 5. What is a potential confounding variable in this scenario? Explain your rationale