Question 9 A surgeon would like to know how long it takes, on average, to complete a coronary artery bypass surgery. She samples 22 surgeries and logs the time it takes to complete each one, in hours: 3.5, 3.4, 3.6, 4.4, 3.4, 3.8, 4, 4.6, 3.6, 3.8, 4.1, 3.9, 4, 4.5, 3.6, 3.2, 4.2, 3.9, 3.4, 4.6, 4.2, 4.4 Assuming the population standard deviation is o = 0.33, construct a 94% confidence interval for the average time it takes to complete a coronary artery bypass surgery. x = N R Za Margin of Error: E = We are 94% confident that the mean amount of time it takes to complete a coronary bypass sugery is between hours and hours