all T-Mobile 11:10 PM @ 33% X Cynthia Renteria -... FR Question #4: Question A: River Run campground has sites for people to use for camping. The sites can be reserved for a certain number of days. To help with cleaning and maintenance, the campground recommends an exit time (the time at which campers leave the site) of 9 A.M. on the last day of the reservation. To estimate the typical exit time, the manager of River Run selected a random sample of 60 sites. Of the selected sites, 40 were reserved by people without young children, and 20 were reserved by people with young children. The following histograms summarize the exit times, recorded as minutes relative to 9 A.M. For example, an exit time of 9:30 A.M. is 30 minutes relative to an exit time of 9 A.M. Each interval contains possible values from the left endpoint up to but not including the right endpoint. WITHOUT YOUNG CHILDREN WITH YOUNG CHILDREN Number of Sites NWACO ber of Si 1 4 N G -60-45 -30 -15 0 15 30 45 60 75 90 105 120 135 150 Minutes 45 60 75 90 105 120 135 150 (relative to 9:00 A.M.) Minutes (relative to 9:00 A.M.) a. Consider the two histograms. (i) What proportion of the sites without young children had an exit time before 10:00 A.M.? (ii) What proportion of the sites with young children had an exit time before 10:00 A.M.? b. Compare the distributions of the exit times for those without young children and those with young children. c. Based on the histograms, what is a reasonable estimate of the median exit time for the random sample of all 60 sites? Explain your reasoning