The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 0.161. The means of 39 samples of n = 24 are Mean 3.88 3.86 3.88 3.81 3.83 3.86 3.82 3.86 3.84 3.87 Sample 1 6779 ENT 2 3 5 6 8 10 Mean 3.86 3.90 3.83 3.81 3.84 3.83 3.87 3.88 3.84 3.80 Click here for the Excel Data File UCL LCL Sample 11 12 13 14 15 16 17 18 19 20 a-2. Is the process in control? O Yes O No Sample Mean 21 3.84 22 3.82 23 3.89 3.86 3.88 7222222 24 25 26 28 29 30 3.90 3.81 3.86 3.98 3.96 a-1. Construct an -chart for this process with three-sigma limits. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Sample 31 32 33 34 35 36 37 38 39 Mean 3.88 3.76 3.83 3.77 3.86 3.80 3.84 3.79 3.85 b. Analyze the data using a median run test and an up/down run test. What can you conclude?

The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 0161 The means of 39 samples of n=24 are Click here for the Excel Dato File 8) Construt an x-chart for this process with three-sigma limits. (Do not round intermediate colculations. Round your answers to 2 decimal places.) 0.2 is the process in control? Yes No b. Analyze the data using o median run test and an up/down run test. What can you conclude