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A psychologist was particularly interested in the relationship between hypnosis on memory

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A psychologist was particularly interested in the relationship between hypnosis on memory. To test this she exposed 10 subjects to a list of 40 nonsense words. She then hypnotized each subject and asked them to recall as many words from the list as was possible. If the mean of these responses is 22 and the standard deviation is 5.9

What proportion of subjects remembered less than 12