In China, four-year-olds average three hours a day unsupervised. Most of the uns...
✅ The verified answer to this question is available below. Our community-reviewed solutions help you understand the material better.
In China, four-year-olds average three 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 select one Chinese four-year-old living in a rural area. We are interested in the amount of time the child spends alone per day.
(a) In words, define the random variable X.
(b). X ~ _____(_____,_____)
(c) Find the probability that the child spends less than one hour per day unsupervised. Sketch the graph, and write the probability statement.
(d). What percent of the children spend over ten hours per day unsupervised?
(e). Seventy percent of the children spend at least how long per day unsupervised?
Want instant access to all verified answers on moodle.uleth.ca?
Get Unlimited Answers To Exam Questions - Install Crowdly Extension Now!