Sum of scores Sum of squared scores Sample size Mean Standard deviation Wrist Band Control MS F Dr. Klaster claims to have developed a way to improve college student's attention span during boring lectures. The wrist band includes a galvanic skin electrode that measures decreases in the skin's electric potenial which, according to Dr. Klaster, is a sign of inattention. Whenever the wrist band detects inattention, it delivers a slight shock -- to help the wearer regain her or his attention. Students in one of Dr. Klaster's classes who volunteered to participate in an evaluation of the wrist band (for $50 -- for some reason he had trouble getting volunteers?!?) were randomly assigned either to wear one of the wrist bands (group 1) or not (group 2) during the next class period's lecture. At the end of the class period all of the participants took a quiz over the material from the lecture. Each participant's score was his or her number correct on the 20-point quiz. Dr. Klaster hypothesized that those wearing the wrist bands would score better on the quiz than those who did not wear the wrist bands. Source df SS Condition Error Total F-crit Submit answers Your data set Condition Quiz Score 2 2 11 2 8 2 6 1 1 2 13 1 1 3523- 7