You may need to use the appropriate appendix table or technology to answer this question Many small restaurants in Portland, Oregon, and other cities across the United States do not take reservations. Owners say that with smaller capacity, no-shows are costly, and they would rather have their staff focused on customer service rather than maintaining a reservation system. However, it is important to be able to give reasonable estimates of waiting time when customers arrive and put their name on the waiting list. The file RestaurantLine contains 10 observations of number of people in line ahead of a customer (independent variable x) and actual waiting time in minutes) (dependent variable y). The estimated regression equation is: - 4.35 +8.8.x and MSE - 94.42 (a) Develop a point estimate (in min) for a customer who arrives with four people on the wait-list. (Round your answer to two decimal places) X min (b) Develop a 95% confidence interval for the mean waiting time (in min) for a customer who arrives with four customers already in line (Round your answers to two decimat places.) X min to min (c) Develop a 95% prediction interval for Roger and Sherry Davy's waiting time (in min) if there are four customers in fine when they arrive. (Round your answers to two decimal places.) X min to X min (d) Discuss the difference between part (b) and part (c). The prediction interval is much wide B than the confidence interval. This is because it is more difficult to predict the waiting time for an individual customer arriving with four people in line than it is to estimate the mean waiting time for a customer arriving with four people in line A B 1 Number of Customers 3 5 5 wa AAN Waiting Time (Minutes) 5 47 2 27 4 36 4 44 6 52 3 21 7 82 3 43 8 69 4 28 . 1 2 3 4 5