The patient recovery time from a particular surgical procedure is nom'lally distributed with a mean of 5.3 days and a standard deviation of 2.1 days. What is the i'Eth percentile for recovery times? [Round your answer to two decimal places.) :I aim 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 survey one Chinese four-year-old living in a rural area. We are nterested in the amount of time the child spends alone per day. Part (a) In words, define the random variable X. O the time (in hours) a child in China spends unsupervised per day the time (in hours) a four-year-old in China spends unsupervised per day O the number of four-year-old Chinese children that live in rural areas O the number of Chine ople that live in rural areas O the time (in hours) a four-year-old in China spends unsupervised per week Part (b) Give the distribution of X. X - N V 3 6 1.5 ) Part (c) Find the probability that the child spends less than 1 hour per day unsupervised. Write the probability statement. P x