The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 0.167 The means of 39 samples of n = 27are Sample Mean Sample Mean Mean

Problem 10-12 (Algo) The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 0.167 The means of 39 samples of n=27 are Sample Sample Mean Sample Sample Mean 3.86 11 21 3.84 31 2 3.82 32 Mean Mean 1 SNN 3 4 5 6 7 8 9 18 3.90 3.83 3.81 3.84 3.83 3.87 3.88 3.84 3.80 12 13 14 15 16 17 18 19 20 3.88 3.86 3.88 3.81 3.83 3.86 3.82 3.86 3.84 3.87 24 25 26 27 28 29 30 3.89 3.86 3.88 3.90 3.81 3.86 3.98 3.96 33 34 35 36 37 38 39 3.88 3.76 3.83 3.72 3.86 3.80 3.84 3.79 3.85 Click here for the Excel Data File a 1. Construct an i-chart for this process with three-sigma limits. (Do not round Intermediate calculations. Round your answers to 2 decimal places.) UCL LCL Problem 10-12 (Algo) The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 0.367 The means of 39 samples of n27 are Sample Mean Sample Mean Sample Mean 1 3.86 11 3.38 21 3.4 31 2 3.00 3.8 12 3.86 22 3.82 32 3.76 3 3.8) 13 3.88 23 3.89 33 3.83 4 3.81 14 3.81 24 3.86 34 5 3.84 3.77 15 3.83 25 3.88 35 3.80 6 36 3.86 26 3.90 36 3.80 7 3.87 17 3.83 27 3.81 37 3.84 8 3.58 18 3.86 28 3.86 38 3.79 9 19 3.84 29 3.98 39 3.85 10 3.se 20 3.87 30 3.96 3.84 Click here for the Excel Data File a1. Construct an t-chart for this process with three-sigma limits. (Do not round intermediate calculations. Round your answers to 2 decimal places.) UCL LOL