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) Give values for pUnresolvedE, the proportion of people in the electrical stimulation group to solve the problem, and pUnresolvedS, the proportion of people in the sham simulation group to solve the problem. What is the difference in proportions pUnresolvedE-pUnresolvedS?

Round your answer to two decimal places.
Unresolved Unresolved el Give values for p the proportion of people in the electrical stimulation group to solve the problem, and.the proportion of people in the sham simulation group to solve the problem. What is the difference in proportions PE P S Round your answer to two decimal places Unrasolved Unresolved Uresolved Unresolved UnresolvedElectrical Stimulation for Fresh Insight? If we have learned to solve problems by one method, we often have difficulty bringing newinsight to similar problems. However, electrical stimulation of the brain appears to help subjects come up with fresh insight. In a recent experiment conducted at the University of Sydney in Australia. 40 participants were trained to solve problems in a certain way and then asked to solve an unfamiliar problem that required fresh insight. Half of the participants were randomly assigned to receive noninvasive electrical stimulation of the brain while the other half (control group) received sham stimulation as a placebo. The participants did not know in which group they were. In the control group, 20% of the participants successfully solved the problem while of the participants who received brain stimulation solved the problem. Chi, R. and Snyder. A., Facilitate Insight by Non-Invasive Brain Stimulation,PLoS ONE, 2011: 612)Treatment Sham Electrical12 Solved Not solved 4 16 8

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Treatment Solved Not solvedTotal 20 20 40 Sham 4 16 Electrical 128 Total 16 24 From the table, out of total 40 participants, 12 participants involved in electrical stimulation solved the problem, so the proportion of people in the electrical stimulation group to solve the problem would be pinruoloed - 12/40-0.3 And 4 participants involved in sham stimulation solved the problem, so the proportion of people in the sham simulation group to solve the problem would be pun resolved-4/40 = 0.1 The difference in proportions pnresolved - pynresolved 0.3-0.1 0.2

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