Mathematics, 21.04.2020 20:40 datskash
On the planet of Mercury, 4-year-olds average 3.2 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.7 hours and the amount of time spent alone is normally distributed. We randomly survey one Mercurian 4-year-old living in a rural area. We are interested in the amount of time X the child spends alone per day.
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Mathematics, 21.06.2019 16:00
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On the planet of Mercury, 4-year-olds average 3.2 hours a day unsupervised. Most of the unsupervised...
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