Question

n article presents a study that investigated the effect of varying the type

of fertilizer on the height of certain Mediterranean woody tree species. In one experiment,

three samples, each consisting of ten trees, were grown with three different fertilizers. One,

the control group, was grown with a standard fertilizer. Another was grown with a fertilizer

containing only half the nutrients of the standard fertilizer. The third was grown with the

standard fertilizer to which a commercial slow-release fertilizer had been added. Following

are the heights of the trees after one year.

Can you conclude that the heights differ among the types of fertilizer? Use

α

= 0

.

05

. You are given that

SS

T reatments

= 229

.

74067

,

SS

T

= 669

.

12967

.

Be sure to show all your work including stating the appropriate hypotheses, constructing

the ANOVA table to obtain the

Answer 1