Question

4. The foundation of experimental design comes from agriculture. Here is a typical experiment You want to study the effect of two fertilizers, sulfate of ammonia and superphosphate, on the yield of Brussels sprouts. Each fertilizer is used at four levels: 0, 30, 60, and 90 pounds per acre. (a) Describe the response variable (b) Describe the treatments. How many levels for each treatment? (c) List a complete set of treatment combinations. Arrange your list in table form (d) Suppose you have sixt principle would you use to assign treatments to units? (Lecture 16 Homework Problem) y-four one-acre plots similar in soil condition. Which important design

Answer 1

a) Response variable :1uL valalad bab wach up alood su姒nku exp.anat-mdar variabte ne lou a,s or phosphal ouwel 0, 30, 0,40 peudo per acx ut the Land be 4 ac duper phosphat e 0 60 6 0 4 0 40 38 3D G T 30 6 0 40 4 0 4 0