Full calculations for: Cedar Sinai compared the effect of relaxation training versus a placebo on the frequency of seizures among epileptics. After an eight-week baseline period in which all patients recorded their frequency of seizures, 13 patients received six weeks of relaxation training. Eleven placebo-control patients were seen the some number of times as the experimental participants but were placed in a room alone and told that sitting quietly would induce relaxation, which would help reduce their seizures. All patients took their usual medications throughout the study. For eight weeks post-treatment, all patients recorded their frequency of seizures. The dependent variable was the change in the number of seizures from baseline through post- treatment. The row data are presented in the following table. A negative number means a decrease in seizures; 0 positive number indicates an increase in seizures. Alpha is 0.10. An independent-samples t test is used to compare the means of the relaxation and placebo conditions. Can we conclude that the relaxation training is more effective than a placebo treatment in reducing the frequency of seizures? Assume the populations are normally distributed and the population variance are not equal. Relaxation Placebo 7 -1 0 -5 -5 16 -1 -7 -14 3 -5 4 -6 -6 -7 -2 -1 2 -4 -4 -7 -3 -13