A researcher wants to know how long it takes, on average, for a certain species of bacteria to divide. She watches 11 cells through a microscope and times how long it takes them to divide. She obtains the following data, in hours: 3.1, 3, 5.3, 3.4, 3.3, 3.3, 3.3, 3.4, 3.1, 3.3, 3.3, 3.3, 3.3, 3.4, 3.4, 3.4, 3.3, 3.3, 3.3, 3.3, 3.3 Assuming the population standard deviation is 3r = 1-1. construct a 90% confidence interval for the average time it takes this species of bacteria to divide. 3: We are 333'. confident that this species of bacteria takes, on average, between hours and hours to divide