The figure below represents a Pareto chart with the reasons cited by customers as causes for unsatisfactory stay at a hotel. Based on the Pareto char above: 1. How many customers in total were surveyed to build the Pareto chart? 2. What percentage of the total number of complains is related to issues with the pool? Cartons of Plaster of Paris are supposed to weigh exactly 32oz. Inspectors want to develop process control charts. They take ten samples of six boxes each and weigh them. Based on the following data 3. What is the sample size 4. What is the overall mean center line 5. Compute the lower control limit for the mean 6. Compute the upper control limit for the mean 7. Compute the lower control limit for the range 8. Compute the upper control limit for the range 9. Is the process is in control? (Yes (true) No (False)) (2pts) Problem 3 (20 points) A department chair wants to monitor the percentage of failing students in classes in her department. Fach class had an enrollment of 50 students last spring. The number of failing students in the 10 classes offered that term were 1,4,2,0,0,0,0,0,0, and 3 . respectively. 10. Compute the p-bar 11. What is the z1 alue for a 95% confidence level 12. Compute the upper control limit for a p-chart at the 95% confidence level 13. Compute the lower control limit for a p-chart at the 95% confidence level 14. Is the process in control? (Yes (true) No (False)) Problem 4(20 poins) The specification for a plastio liner for concrete highway projects calls for a thickness of 6.0mm=0.1mm. The standard deviation of the process is estimated to be 0.02mm. 15. What is the upper specification limit for this product 16. What is the lower specification limit for this product 17. What is the Cp for this process? 18. About what percent of all units of this liner will meet specifications