In response to the call of the HKSAR Government and to uphold our principle of making the health and safety of students our top priority, the teaching methods in this semester have changed a lot. Dr Tian is interested in identifying the relevant personality traits of students (X) and the choice of specific learning support (Y) (hint: behavioural tendencies of the teacher, availability of learning resources, characteristics of the teaching platform) that would affect the students' performance in MKT B362F (as measured by course results). Please suggest the independent variables X and Y in the following conceptual model; where X and Y are the student's personality traits and the choice of specific learning support, respectively, yet to be explored.

X H1 students's performance

Y H2 student's performance

i) Please write down your choice of X and Y, and explain the rationales behind the possible conceptual relationships among the variables in your conceptual model.

(ii)State the underlying null and alternative hypotheses of H1 and H2.

(iii)Suggest a statistical analysis method that can be used for testing H1 and H2. Briefly explain why it is the best alternative.