A Laptop Service Manager wishes to determine the extent to which time, y, required to perform service (in hours ) can be predicted by the number of laptops , x, serviced . The data below represents the time spent and the corresponding number of laptops serviced for a sample of 15 service calls. Use these data to answer the questions that follow . 1.5 1.1 2.1 4.1 0.8 1.5 2 1.9 1.1 1.9 3.3 5 1.3 2.5 0.5 3 2 2 4 5 6 2 4 11 1. Sketch a scatterplot for this relationship and name the regression assumptions that seem to have been violated here. [2 MARKS] 2. Find the OLS estimates for the slope and y-intercept [4 MARKS] 3. Construct and complete ANOVA Table and determine the observed F-value [4 MARKS] 4. Find the coefficient of determination for this model [2 MARKS]