Question 23 (4 points) Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world. Results from the last five samples are shown in the table. Sample 1 Sample 2 10.6 Sample 5 Sample 3 Sample 4 9.8 9.9 10.1 10.9 9.7 9.5 10.3 9.9 10.5 10.1 10.7 9.2 10.0 10.1 9.9 9.8 10.5 10.4 10.1 10.4 10.1 10.9 9.9 10.3 What is the value of UCL for the mean chart? Greater than 10.99 but less than or equal to 11.99 Less than or equal to 9.00 Greater than 9.00 but less than or equal to 9.99 Greater than 9.99 but less than or equal to 10.99 Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 10.1 10.6 9.8 9.9 10.9 9.7 9.5 10.3 9.9 10.5 10.1 10.7 9.2 10.0 10.1 9.9 9.8 10.5 10.4 10.1 10.4 10.1 10.9 9.9 10.3 What is the value of UCL for the mean chart? Greater than 10.99 but less than or equal to 11.99 Less than or equal to 9.00 Greater than 9.00 but less than or equal to 9.99 Greater than 9.99 but less than or equal to 10.99 Greater than 11.99 Question 24 (4 points) The seven-person maintenance function at a hospital performs both preventive and corrective maintenance on hundreds of items each month. All the workers are scheduled for 40 hours per week and there are four weeks in a month. It is the goal of the maintenance department to achieve 90% utilization with a mix of two-thirds preventive maintenance and one-third corrective maintenance. How many hours each month are spent performing corrective maintenance if they achieve their 90% utilization and correct/preventive mix targets? Less than or equal to 220 hours O Greater than 260 hours but less than or equal to 300 hours Greater than 220 hours but less than or equal to 260 hours Greater than 340 hours Greater than 300 hours but less than or equal to 340 hours