Answers to Analyzing Data 23.1 Questions

1.

a. The sample size is n = 4 for plots with kudzu and for plots lacking kudzu.

b.

These results indicate that plots with kudzu have higher NO emissions than do plots lacking kudzu.

3. The degrees of freedom is df = 6, and the (two-tailed) p value of the test is p = 0.047. This result indicates that NO emissions in plots with kudzu differ significantly from NO emissions in plots lacking kudzu.