Some studies show that people who think they are intoxicated will show signs of

Question

Some studies show that people who think they are intoxicated will show signs of intoxication, even if they did not consume alcohol. To test whether this is true, researchers had a group of five adults consume nonalcoholic d which they were told contained alcohol. The participants completed a standard driving test before drinking and then after one nonalcoholic drink and after five nonalcoholic drinks. A standard driving test was conducted in a school parking lot where the participants had to maneuver through traffic cones. The number of cones knocked over during each test was recorded. The following table lists the data for this hypothetical study. Driving Test Before After one After Five Drinking Drink Drinks 2 3 3 5 (a) Complete the F-table. (Round your answers to two decimal places.) Source of Fobt MS Between persons Within groups (error) Total

Explanation / Answer

a)

Two-way ANOVA: Y versus Person, Groups

Source DF SS MS F P
Person 4 20.2667 5.06667 6.20 0.014
Groups 2 10.1333 5.06667 6.20 0.024
Error 8 6.5333 0.81667
Total 14 36.9333

S = 0.9037 R-Sq = 82.31% R-Sq(adj) = 69.04%

Comment: The estimated p-values of Person and Group are 0.014 and 0.024 respectively. Hence, Person and groups have significance association with number of cones knocked.

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