Level Number Mean Std Lower Upper Error 95% 95% Smile 1 34 5.36765 0.27912 4.8155 5.9198 Smile 2 34 4.91176 0.27912 4.3596 5.4639 Smile 3 34 4.91176 0.27912 4.3596 5.4639 Smile 4 34 4.11765 0.27912 3.5655 4.6698 Std Error uses a pooled estimate of error variance Because analysis of variance shows prob of 0.02 which is less than 0.05 thus making it significant. So that is telling us that there is indeed a difference between smile 1, 2, 3, and 4