1. LBC Shipping Company believes that the variation in the cost of a customer's shipment can be explained by the differences in the weight of the packages being shipped. To investigate whether this relationship is justifiable, a random sample of 15 customer shipments was selected and the weight in kilograms (kg) and the cost in Omani Rial were recorded. The following results were obtained: Weight (kg) 8 6 5 7 12 9 17 Cost (OMR) 11 8 9 11 17 11 27 16 9 25 21 24 21 10 20 13 8 18 17 20 9 5 12 a. For the two variables (weight and cost), determine which one is the dependent variable (y) and which one is the independent variable (x). b. Estimate the values of Bo and B1