The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 0.180 The means of 39 samples of n 26 are Sample Mean Sample Mean Sample Mean Sample Mean 3.86 11 3. 21 3.84 31 3.88 3.90 22 3.82 32 3.76 3 3.83 13 3.88 3.89 3.83 3.81 14 24 3.16 3.72 3.84 15 3.83 3.86 3.83 16 3.86 3. 2 3.87 12 3.82 3.81 3.84 8 3.88 18 3.86 3.86 3.79 9 3.84 19 3.84 3.85 10 3.80 20 3.87 3 3.96 Click here for the Excel Data Fille 8-1. Construct an -chart for this process with three-sigma limits. (Do not round Intermediate calculations. Round your answers to 2 decimal places.) UCL LCL -2. Is the process in control? O Yes ONO b. Analyze the data using a median run test and an up/down run test. What can you conclude? Cond Median Up Down The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 0.180 The means of 39 samples of n 26 are Sample Mean Sample Mean Sample Mean Sample Mean 3.86 11 3. 21 3.84 31 3.88 3.90 22 3.82 32 3.76 3 3.83 13 3.88 3.89 3.83 3.81 14 24 3.16 3.72 3.84 15 3.83 3.86 3.83 16 3.86 3. 2 3.87 12 3.82 3.81 3.84 8 3.88 18 3.86 3.86 3.79 9 3.84 19 3.84 3.85 10 3.80 20 3.87 3 3.96 Click here for the Excel Data Fille 8-1. Construct an -chart for this process with three-sigma limits. (Do not round Intermediate calculations. Round your answers to 2 decimal places.) UCL LCL -2. Is the process in control? O Yes ONO b. Analyze the data using a median run test and an up/down run test. What can you conclude? Cond Median Up Down