MY NOTES In the 4x100 medley relay event in swimming, four swimmers swim 100 yards, each using a different stroke. The four medley relay swimmers for a college team preparing for their conference championships have the following summary statistics (in seconds) for the four strokes: Swimmer Expected Value Stand. Dev. 1 (backstroke) 49.52 0.32 2 (breaststroke) 54.89 0.29 3 (butterfly) 49.15 0.3 4 (freestyle) 45.28 0.22 Question. Let the random variable T denote the relay team's total time in the medley event. Determine the mean E(T) and standard deviation SD(T). mean standard deviation (use 3 decimal places)