Directions: Answer each question fully and in context. Be sure to clearly label all graphical displays and show all appropriate work. Your solution methods must be easily evident. Teenagers spend, on average, approximately 5 hours online every day. Do parents realize how many hours their children are spending online? A family psychologist conducted a study to find out. A random sample of 10 teenagers were selected. Each teenager was given a Chromebook and free internet for 6 months. During this time their internet usage was measured (in hours per day). At the end of the 6 months, the parents of each teenager were asked how many hours per day they think their child spent online during this time frame. Here are the results. Teenager Actual time spent online hoursfda Parent perception (hours/day) Difference A- P a. Make a dotplot of the difference (A - P) in time spent online (hours/day) for each teenager. What does the dotplot reveal? b. Find the mean and standard deviation of the difference (A - P) in time spent online. Interpret the mean difference in context. c. Construct and interDret a 90% confidence interval for the true mean difference I' A - P] in time soent online