Question: The time needed for checking in at a hotel is to be investigated. Historically, the process has had a standard deviation equal to 146. The

The time needed for checking in at a hotel is to be investigated. Historically, the process has had a standard deviation equal to 146. The means of 39, samples of n=18 are a-1. Construct an Xchart for this process with three-sigma limits. (Do not round intermediate calculations. Round your answers to 2 decimal places.) a-2. Is the process in control? Yes No The time needed for checking in at a hotel is to be investigated. Historically, the process has had a standard deviation equal to 146. The means of 39, samples of n=18 are a-1. Construct an Xchart for this process with three-sigma limits. (Do not round intermediate calculations. Round your answers to 2 decimal places.) a-2. Is the process in control? Yes No

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