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

ID: 3177837 • Letter: S

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 drinks, 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.

(a) Complete the F-table. (Round your answers to two decimal places.)

(b) Compute a Bonferroni procedure and interpret the results. (Assume experimentwise alpha equal to 0.05. Select all that apply.)

Students knocked over significantly more cones after 1 nonalcoholic drink compared with the driving test prior to drinking.Students knocked over significantly more cones after 5 nonalcoholic drinks compared with the driving test after 1 nonalcoholic drink.There were no significant differences between any of the groups.Students knocked over significantly more cones after 5 nonalcoholic drinks compared with the driving test prior to drinking.

Driving Test Before
Drinking After One
Drink After Five
Drinks 0 1 3 0 1 2 1 2 3 3 2 6 0 1 0 k -XX"x-)x-* )#7 *

Explanation / Answer

Two-way ANOVA: Driuving versus Groups, Persons

Source DF SS MS F P
Between Groups 2 11.2000 5.60000 5.51 0.031
Between Persons 4 20.2667 5.06667 4.98 0.026
Within Groups (Error) 8 8.1333 1.01667
Total 14 39.6000

S = 1.008 R-Sq = 79.46% R-Sq(adj) = 64.06%

Interpreation: The estimated p-values of between groups and Persons are less than 0.05 level of significance. Hence, we can not accept the null hypothesis for both the groups and Persons, and conclude that theire is significant difference of driving between the groups. Also, The difference of same person with different level of alcohol gives significant maneuver through traffic cones.

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

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

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