In China, 4-year-olds average 3 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.5 hours and the amount of time spent alone is normally distributed. We randomly survey one Chinese 4-year-old living in a rural area. We are interested in the amount of time the child spends alone per day.†Give the distribution of X.ind the probability that the child spends less than 2 hour per day unsupervised.Write the probability statement.What is the probability. What percent of the children spend over 10 hours per day unsupervised? (Round your answer to four decimal places.)80% of the children spend at least how long per day unsupervised? (Round your answer to two decimal places.) hr
In China, 4-year-olds average 3 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.5 hours and the amount of time spent alone is
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