Question

Lock, Statistics: Unlocking the Power of Data, 2e learned to solve problems by one method, we often have dificulty bringing new insight to similar problems. However, electrical si subjects come up with fresh insight. In a recent experiment' conducted at the University of Sydney in A asked to solve an unfamiliar problem that r half (control group) received sham stimulation as a placebo. The participant the problem while 60% of the participants who received brain stimulation solved the problem. stralia, 40 participants were trained to solve problems in a certain way and then articipants were randomly assigned to receive noninvasive electrical stimulation of the brain while the other fresh i s did not know i n which group they were. In the control group, 20% of the participants successfully solved Chi, R. and Snyder, A., "Facilitate Insight by Non-Invasive Brain Stimulation," PLos ONE, 2011; 6(2) Correct. (a) Is this an experiment or an observational study? Observational study LINK TO TEXT Correct. (b) From the description, does it appear that the study is double-blind, single-blind, or not

just need help with problem E. I cannot figure it out

Answer 1