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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.

Is it D?

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.

Is it D?

WOW 2 years later and nobody helped you sorry nobody helped but I think it's d

No, it is not D. The correct answer is C. The statement "This difference was significant at the 0.05 level" means that the probability that one weed killer performed better than the other by chance alone is less than 0.05. This suggests that there is strong evidence to support the claim that one weed killer is more effective than the other.

No, the correct answer is C. The statement "This difference was significant at the 0.05 level" indicates that the probability that one weed killer performed better by chance alone is less than 0.05. In statistical hypothesis testing, the significance level (often denoted as alpha) is the threshold used to determine whether the observed difference between two groups is statistically significant or not. A significance level of 0.05 means that there is a 5% chance that the observed difference is due to random chance alone. Therefore, if the difference was found to be significant at the 0.05 level, it means that the probability of one weed killer performing better by chance alone is less than 0.05, indicating that there is a significant difference between the two types of weed killers.