An investigator is interested in the effects of stress on driving performance.She assigns

participantstoone of three stress conditions (low, moderate, high) and records scoreson a

driving simulator.Is there a significant difference between the groups of participants due

to stress?Use(= .05.If so, find where the significant differences are and the percentage

of variance explained by the factor.Make sure you identify the null and alternate

hypotheses and the critical F-value, find the F-statistic and state your conclusion and then

find the percentage variance explained.

Low Moderate High

5 9 5

4 10 6

3 8 3

4 11 5 "# =527