You are interested in determining if different brands of pesticide are more effe

Question

You are interested in determining if different brands of pesticide are more effective at killing bugs. You purchase three different brands of pesticides and spray them daily into different testing laboratories designed for this experiment. The number of dead bugs at the end of each day is observed. The ANOVA table is given below: P-value Source Group Error Total df MS 119.0 10 12 180.5 The P-value is about 0.005. Which one of the below is the best conclusion? The mean number of bugs killed by the three pesticides are the same The mean number of bugs killed by the three pesticides are different. It is not possible to make a conclusion based on the information given C.

Explanation / Answer

The P value is less than 0.05.

We reject the null hypothesis. Then we may concluded that the mean number of bugs killed by the three pesticides are different.  

Answer is (B)

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