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A surgeon would like to know how long it takes, on average, to complete a coronary artery bypass surgery. She samples 30 surgeries and logs the time it takes to complete each one, in hours: 3.4, 4.2, 2.8, 3.9, 3.5, 3.9, 3.8, 4, 4, 3, 4.8, 4.4, 4.8, 2.9, 2.9, 5.6, 4.7, 4.5, 3, 4.5, 3.9, 2, 5, 4.8, 3.6, 3.2, 3.8, 3.9, 4.9, 3.4 Assuming the population standard deviation is o = 0.82, construct a 93% confidence interval for the average time it takes to complete a coronary artery bypass surgery. = = Margin of Error: E - We are 93% confident that the mean amount of time it takes to complete a coronary bypass sugery is hours. hours and between