To evaluate the effect of a treatment, a sample is obtained from a population, with a mean of u = 30, and the treatment is administered to the individuals in the sample. After the treatment, the sample mean is found to be M = 31.3 with a standard deviation of s= 3.
a) If the sample consists of n=16 individuals, are the data sufficient to conclude that the treatment has a significant effect using a two-tailed test with alpha = 0.05.
b) If the sample consists of n=16 individuals, are the data sufficient to conclude that the treatment has a significant effect using a two-tailed test with alpha = 0.05.
c) Comparing your answer for parts a and b, how does the size of the sample influence the outcome of a hypothesis test