QUESTION 8 In China, fouryearolds average three hours aday unsupervised. Most ofthe unsupervised children live In rural areas, conSIdered safe. Suppose that the standard deVIation Is 1.5 hours and the amount oftime spent alone Is normally distributed. We randomly select one Chinese foureyeareold liv1ng In a rural area. We are Interested In the amount oftime the child spends alone perday. What percent ofthe children spend overten hours per day unsupemsed? Answer: \"If: QUESTION 9 In China, fouryearolds average three hours aday unsupervised. Most ofthe unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.5 hours and the amount oftime spent alone is normally distributed. We randomly select one Chinese four-yearold living in a rural area. We are interested in the amount oftime the child spends alone perday. Seventy percent of the children spend at least how long per day unsupervised? (Leave answer in decimal I'crm rounded to 2 decimal places ) Answer: hours QUESTION 10 Terri Vogel, an amateur motorcycle racer, averages 129.71 seconds per2.5 mile lap (In a seven-lap race) with a standard deviation of 2.28 seconds. The distribution other race times is normally distributed. We are interested In one ofher randomly selected laps. Find the percent of her laps that are completed in less than 130 seconds. Elia. Answer to the nearest whole number. Answer: QUESTION 11 Terri Vogel, an amateur motorcycle racer, averages 129.71 seconds per 2.5 mile lap (In a seven-lap race) with a standard deviation of 2.28 seconds. The distribution of her race times is normally distributed. We are interested In one ofher randomly selected laps. The Fastest 3% of her laps are under seconds. HINT: Be careful here. Fastest time Is less than the mean. Answer to the nearest whole number