Question

When designing an experiment to study tree growth, the following four treatments are used: none, irrigation only, fertilization only, irrigation and fertilization. A row of 10 trees is used in the study and each tree is randomly assigned to one of the four treatments. How many different treatment arrangements are possible

Answer 1

Answer:

286 different treatment arrangements

Step-by-step explanation:

This is a combination problem.

We want to share 10 trees amongst 4 experimental groups.

13C3 = 286 different treatment arrangements.