2.2. Telles, Singh. and Balkrishna (2012) reported that yoga training improves nger dexterity. Suppose that a researcher conducts an experiment evaluating the ef fect of yoga on standardized O'Conner nger dexterity test scores. A sample of n = 4 participants is selected, and each person receives yoga training before being tested on a standardized dexterity task. Suppose that for the regular population, scores on the dexterity task form a normal distribution with p. = 50 and a = 8. The treatment is expected to increase scores on the test by an average of 3 points. a. If the researcher uses a two-tailed test with or = .05. what is the power of the hypothesis test? b. Again, assuming a two-tailed test with a = .05, what is the power of the hypothesis test if the sample size were increased to n = 64? \\l