Assignment:
You are studying the effect of two different methods of relaxation therapy. These two have never been compared before. The population mean for method 1 is 100 on a standardized score of relaxation. The population mean for method 2 is 102 on the same standardized test. The population standard deviation for both methods is 5. Assume that you want a power of .9 to detect an effect in your study. Estimate the sample size. [Assume alpha (significance level) equals 0.05.]
A. Total N is greater than 300
B. Total N = 264
C. Total N is less than 526
D. n in each group is 526
Provide complete and step by step solution for the question and show calculations and use formulas.