Chapter 1, Problem T1.10SPT

To determine

To find: the following is not a correct statement about the results of this experiment.

Answer to Problem T1.10SPT

Some of the results for the low concentration of weed killer show a smaller percentage of weeds growing than some of the results for the high concentrations.

Explanation of Solution

Given:

  

1. Correct, the reason is that the in the box plot S is lying to the right comparing to the N which is indicating that the new chemical outcomes in better weed control comparing the standard weed killer.
2. Correct, for both the S and N, the boxes of the box plots of higher concentrations lying to the left of the boxes of the box plots of lower concentrations, which means that more weeds grew for the low concentrations.
3. Correct, the reason is that box plot of N is wider than S which is indicating that the outcomes for the standard weed killer are less variable comparing to the outcomes of the new chemical.
4. Not correct, because for both S and N the boxes of the box plots of higher concentrations are lying to the left of the boxes of the box plots of lower concentrations, which means that more weeds grew for the low concentrations.
5. Correct, because it is not the lowest percent of weeds for the low concentration is near 3% and the highest percent of weeds for the high concentration is near 50%, which is showing that it is possible for the low concentration to have a smaller percentage of weeds compared to the high concentration.

Hence, the correct option is (d)