Statistics : answer the following questions using the table :

A group of students in a research methods class wanted to understand if living situation (alone or with roommate/s) affects college students' anxiety levels. They recruited eight PY101 students who were living alone and 8 who had a roommate to take part in their study. (None of the study participants lived together.) To measure anxiety, they gave the Beck Anxiety Inventory to all participants. The scores from the anxiety inventory are listed in the following table.

Question 3 1 pts Step 3. - Identify your critical value tcrit 0 +2.3 O +1.8 O +2.0 O + 2.2 Question 4 1 pts For the current problem, calculate tobs. Report your answer rounded to one decimal place. O 2.1 O 1.8 O 2.4 O 2.0Question 5 1 pts Step 5. - Compare Observed to Critical Value & Make Conclusion O Fail to reject null. There is no difference in anxiety levels between students who live alone vs. with a roommate. O Reject the null. There is a significant difference in anxiety levels between students who live alone vs. with a roommate. Question 6 1 pts Violation of which assumption would cause this test to have potentially invalid results? O Normality of Distribution O Homogeneity of Variance O Independence of Observations O All of the above