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Five different training programs for improving endurance are compared. Forty individuals are randomly divided into five groups of n = 8 each and a different training program is assigned to each group. After two months, the improvement in endurance is recorded for each participant.
-A one-way analysis of variance is used to compare the five training programs, and the resulting p-value is 0.023. At a significance level of 0.05, the appropriate conclusion about mean improvement in endurance is that it
A) is the same for the five training programs.
B) is different for each of the five training programs
C) differs for at least two of the five training programs.
D) is significantly better for one of the training programs than for the other four.

Question

Use the following information for questions:
 Five different training programs for improving endurance are compared. Forty individuals are randomly divided into five groups of n = 8 each and a different training program is assigned to each group. After two months, the improvement in endurance is recorded for each participant.
-A one-way analysis of variance is used to compare the five training programs, and the resulting p-value is 0.023. At a significance level of 0.05, the appropriate conclusion about mean improvement in endurance is that it
A) is the same for the five training programs.
B) is different for each of the five training programs
C) differs for at least two of the five training programs.
D) is significantly better for one of the training programs than for the other four.

Quizplus · Accepted Answer

The p-value of 0.023 is less than the significance level of 0.05, indicating that there is a statistically significant difference in mean improvement in endurance for at least two of the training programs.

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