An analysis of variance is used to evaluate the mean differences for a research study comparing four treatments with a separate sample of n = 8 in each treatment. if the data produce an f-ratio of f = 4.60, which of the following is the correct statistical decision?
a. there is not enough information to make a statistical decision.
b. fail to reject the null hypothesis with either alpha = 0.05 or alpha = 0.01
c. reject the null hypothesis with either alpha = 0.05 or alpha = 0.01
d. reject the null hypothesis with alpha = 0.05 but not with alpha = 0.01