A soft drink distributor is studying the effectiveness of delivery methods. Specifically, the distributor is interested in how the speed of delivery is affected by the type of hand truck used and whether or not an unloading ramp is used. Two types of hand truck (A and B) are used with and without unloading ramps for 1 week in each of two delivery crews. Delivery time is measured for each delivery. A subset of the data from this experiment is presented below:

this is about design of expriments

1 1 1 1 Crew Hand Truck Type A A B B A A B B 2 A 2 A 2 B 2 B 2 A 2 A 2 B 2 B Ramp Present/Absent Present Absent Present Absent Present Absent Present Absent Present Absent Present Absent Present Absent Present Absent Delivery Speed 27 25 40 44 35 22 33 46 53 41 26 18 29 41 20 31 Identify which of the following statistical design features are included in this exper- iment and what they are: (a) Treatment Factor(s) (b) Treatments (C) Blocks (d) Experimental Units (e) Replications 1 1 1 1 Crew Hand Truck Type A A B B A A B B 2 A 2 A 2 B 2 B 2 A 2 A 2 B 2 B Ramp Present/Absent Present Absent Present Absent Present Absent Present Absent Present Absent Present Absent Present Absent Present Absent Delivery Speed 27 25 40 44 35 22 33 46 53 41 26 18 29 41 20 31 Identify which of the following statistical design features are included in this exper- iment and what they are: (a) Treatment Factor(s) (b) Treatments (C) Blocks (d) Experimental Units (e) Replications