We conduct an experiment to compare the responses to four different treatments. Thirty volunteers are randomly assigned to receive one of the treatments. The MSE is found to be 36. Seven individuals were given Treatment 1. The mean and standard deviation of responses for these seven individuals were x = 20 and s, 4. A 95% confidence interval for the true mean response u, for Treatment 1 is: 20 4.66 20 3.42 20 3.11 O 20 5.55 O 20 3.70 We conduct an experiment to compare the responses to four diff