Andrea conducted an experiment comparing number of helping behaviors of individuals who just passed a test to those individuals who just failed a test. Using a sample of 27 participants per group, she found that the mean number of times for those who just passed was 19 whereas for those who failed it was 14. Andrea estimated the population standard deviation to be 6. (Use = .05, two-tailed). Using an effect size of 0.60 (and =.05) how many total participants would Andrea need to obtain a power of .94? 69 94 138 188