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Question Answered step-by-step Statistics. Image transcription text0n the planet of Mercury, 4-year-olds average 2.9 hours a day unsupervised. Most of the unsupervised childrenlive in rural areas, considered safe. Suppose that the standard deviation is 1.3 hours and the amount of timespent alone is normally distributed. We randomly survey one Mercurian 4-year-old living in a rural … Show more… Show moreStatistics.  Math Statistics and Probability MATH 14 Share QuestionEmailCopy link Comments (0)