Homework Help: probability and statistics

Posted by kiera on Friday, January 6, 2012 at 3:23pm.

welsh, davis, burke, and williams (2002) conducted a study to evaluate the effectiveness of a carbohydrate-electrolyte drink on sports performance and endurance. experienced athletes were given either s carbohydrate-electrolyte drink or a placebo while they were tested on a series of high-intensity exercises. one measure was how much time it took for the athletes to run to fatigue. data similar to the results obtained in the study are shown in the following table.
placebo- mean- 21.7 se-2.2
carbohydrate-electrolyte mean- 28.6 se- 2.7
a. construct a bar graph that incorprates all of the information in the table.
b. looking at your graph, do you think that the carbohydrate-electrolyte drink helps performance?

probability and statistics - PsyDAG, Sunday, January 8, 2012 at 12:47pm
Although I cannot show a bar graph, you can still test the significance with the process indicated in response to your previous post.

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