To evaluate the effect of a treatment, a sample is obtained from a population with a mean of u = 26, and the treatment is administered to the individuals in the sample. After treatment, the sample mean is found to be M = 28.4 with SS = 86. If the sample consists of 9 individuals, what is the t statistic, and are the data sufficient to conclude that the treatment has a significant effect using a two-tailed test with a = .05? 2.20, yes O 2.20, no O 2.46, yes 2.46, no

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