please solve a,b&c

Q.2. The averages for different dimensions of service quality were computed by averaging the items pertaining to the dimensions. Use the following data to determine which dimensions to emphasize:- Perceptions Expectations Tangibles 5.4 4.2 Reliability 3.2 6.4 Responsiveness 2.5 2.3 Assurance 5.6 3.3 Empathy 1.9 6.4 a. Using simple differencing, determine which dimensions should be emphasized. b. Use two-dimensional differencing plot to determine which dimensions should be emphasized c. Based on your findings, choose the most important dimension and describe how you would develop a process improvement program to address the dimensions that need to be improved