1.05. 12. A sample is selected from a population with u = 50. After a treatment is administered to the individuals in the sample, the mean is found to be M=55 and the variance is s2 = 64. (Worth 6 points total) a. If the sample has n = 4 scores, then conduct a hypothesis test to evaluate the significance of the treatment effect and calculate Cohen's d to measure the size of the treatment effect. Use a two-tailed test with a = b. If the sample has n- 16 scores, then conduct a hypothesis test to evaluate the significance of the treatment effect and calcylate Cohen's d to measure the size of the treatment effect. Use a two-tailed test with a = = .05. c. Describe how increasing the size of the sample affects the likelihood of rejecting the null hypothesis and the measure of effect size