last branch A will be 48 and B will be 40

UBC coaching center has two branches in Dhaka: one in Dhanmondi (Branch A) and another one in Mohammadpur (Branch B). To understand their students' performance, the coaching center conducts the same test in both branches. A sample of 8 students have been selected from branches A and B respectively, and the following table shows data on their performance. Use appropriate statistical techniques on the data to find out whether (a) there is a statistically significant difference in the students performance between the two branches, and (b) whether there is a positive or negative relationship between the students' performances of the two branches. Branch A 35 36 32 35 25 32 39 4 Branch B 46 43 64 39 42 41 31 4