A random sample is selected from a normal population with a mean u = 30 and standard deviation sima = 8 . After a treatment is administered to the individuals in the sample, the sample mean is found to be M =33. a) if the sample consist of n=16 scores is the sample mean sufficient to conclude that the treatment has a significant effect? Use a two tailed test with alpha spaceequals space 0.05. b) if a sample consists of n= 64 scores, is the sample mean sufficient to conclude that the treatment has a significant effect? Use a two tailed with alpha space equals space 0.05. c) comparing your answers for parts a and b explain how the size of the sample influences the outcome of the hypothesis test?

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