Question

an electronics company wants to compare the quality of their cell phones to the cell phones from three competitors. they sample 10 phones from each company and count the number of defects for each phone. if anova was used to compare the average number of defects, then the treatments would be defined as:
a the number of cell phones sampled.
b the total number of phones.
c the four companies.
d the average number of defects.

Explanation:

In ANOVA, treatments are the different levels of the factor being studied. Here, the factor is the company making the cell - phones, and there are 4 companies (the electronics company and its 3 competitors).

Answer:

C. the four companies