Suppose 4-year-olds in a certain country average 3 hours a day unsupervised and that most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.8 hours and the amount of time spent alone is normally distributed. We randomly survey one 4-year-old living in a rural area. We are interested in the amount of time the child spends alone per day.                                                                                                                                                                                    In words, define the random variable X.  2.Give the distribution of X. 3.What percent of the children spend over 10 hours per day unsupervised? (Round your answer to four decimal places.) 4.What percent of the children spend over 10 hours per day unsupervised? (Round your answer to four decimal places.)

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Status NEW Posted 19 Aug 2017 01:08 PM My Price 5.00

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