In an experiment to learn if substance M can help restore memory, the brains of 20 rats were treated to damage their memories. The rats were trained to run a maze. After a day, 10 rats were given M and 7 of them succeeded in the maze; only 2 of the 10 control rats were successful. What is the plus four 90% confidence interval for the difference between the proportion of rats that succeed when given M and the proportion that succeed without it? (Usep_Mp_{no M}.

Round your answers to three decimal places.)

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