Scenario D The company uses high performance equipment to manufacture its sails. The owner noted the time required (in minutes) to complete the production of the sails (in square meters). Here is the data he collected: Production (in square meters) y Production time (in minutes) x 125 150 150 215 85 105 225 280 120 160 180 220 215,300 105 151 94 130

Question 10 What can be said about the form of the statistical link that may exist between these two variables? (6 points of which 4 are allocated for the scatter diagram) [Insert your answer here.]

Question 11 Calculate the coefficients b_1 and b_0 of the regression line. (8 points of which 4 are allocated for calculations) [Insert your answer here.]

Question 12 Give an estimate of the production (in square meters) corresponds to a production time of 150 minutes? (4 points of which 2 are allocated for the regression line) [Insert your answer here.]

Question 13 What is the difference between the estimated value (question 12) and the observed value (see table) called? Why do we observe this discrepancy? (4 dots) [Insert your answer here.]