Question

Agricultural scientists seek to test the effects of a new pesticide on corn crops. Half of the

participating farmers are assigned the new pesticides and the other half continue using an alternative

pesticides. The crops are compared after two seasons.

(a) Identify the explanatory variable and response variable.

(b) Identify the experimental units.

(c) Identify the treatments.

(d) Can we reach a conclusion about a cause and effect relationship between pesticides used

and growth of crops. (Hint: Discuss the keys to design of experimental study including

blinding, replication, and randomization)?

Answer 1