The probability of the experimental hypothesis
has been deduced (p = 0.001) 5.
To avoid possible variations in the confederates' behavior according to the experimental conditions, the confederates were not informed of the experimental hypothesis
If the null hypothesis that the results are due to chance is rejected, the experiment is interpreted as providing evidence for the alternative or experimental hypothesis
. Thus, the experiment has two possible outcomes--the null hypothesis is either accepted or rejected.
To avoid possible variations in the confederates' behavior according to the experimental conditions, the confederates were not informed about the experimental hypothesis
. A pre-test was conducted in the street in order to train the confederates in the use of the procedure and to verify that they acted in the same way in the three experimental conditions.
However, the experimental hypothesis
was not supported by the other two trials.
Therefore, researchers need to aim for the highest power they can achieve, as the failure to utilize an adequate level of power in a statistical test increases the danger of needlessly rejecting an experimental hypothesis
If the probability or p value of the observed outcome under this null hypothesis is less than a prespecified criterion, the outcome is interpreted as a significant result that provides evidence for the alternative or experimental hypothesis
These results support the experimental hypothesis
that caffeine and ephedra do enhance total amount of exercise and total time of exercise.
Nonsignificant results could be due to the lack of power or to the experimental hypothesis
Therefore, the experimental hypothesis
was not supported.
An underpowered study is a biased form of research because it cannot provide basic evidence that the experimental hypothesis
The results of a two-way ANOVA indicated that the null hypothesis which stated that the chicken skin would not absorb more arsenic over increased periods of time was rejected, and the experimental hypothesis