Using the following data on the Observations 10, 13, 4, and 20, confirm that the complete linkage distance between the cluster containing {10, 13} and the cluster containing {4, 20} is 2.577 units as displayed in the dendrogram.               If required, round your answers to three decimal places. Do not round intermediate calculations.       Distance from Observation 10 and Observation 4:   Distance from Observation 10 and Observation 20:   Distance from Observation 13 and Observation 4:   Distance from Observation 13 and Observation 20:

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