Shipment Cargo Type Cost of Shipment Semifragile $7.00 2 Durable $2.00 3 Fragile $13.80 4 Fragile $11.10 5 Semifragile $10.00 6 Fragile $17.20 Semifragile $11.50 Semifragile $6.50 Semifragile $8.50 10 Durable $2.10 11 Fragile $10.90 12 Fragile $12.00 13 Durable $7.50 14 Durable $3.40 15 Durable $1.301 0-28 1. For three cargo types, how many dummy variables are needed? I 2. If the cargo type is durable, the cost of shipment is reduced by . [2 decimals] 3. If the cargo type is fragile, the cost of shipment is increased by $ . [2 decimals] 4. Which cargo type is most expensive? :3 durable r: fragile [3 semifragile 5. Which cargo type is least expensive? I: durable r: fragile r: semifragile 6. % of the variation in shipping cost is explained by the multiple regression model. [1 decimal] 7. What is the average cost of shipping a package with semifragile cargo? [2 decimals] l