A study of two types of weed killers was done on two identical weed plots. One weed killer killed 15% more weeds than the other. This difference was significant at the 0.05 level. What Does this mean?
A) The improvement was due to the fact that there were more weeds in one study.
B) The probability that the difference was due to chance alone is greater than 0.05.
C) The probability that one weed killer performed better by chance alone is less than 0.05.
D) There is not enough information to make any conclusion.

Question

Quizplus · Accepted Answer

The statement means that the likelihood of the observed difference in weed-killing effectiveness being due to random chance is less than 5%, indicating a statistically significant result.

A Study of Two Types of Weed Killers Was Done