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[10 points] Frames sent over ethernet cables may fail to reach their destinations, due to possible collisions of frames sent by different senders over a common shared cable. A colliding frame thus needs to be retransmitted, possibly repeatedly. Let the following be the number of transmissions of a sample of 10 frames sent by a station: 3, 1, 2, 2, 1, 6, 1, 4, 3, 2 Compute the mean and standard deviation of the number of transmissions of these 10 frames