A researcher wants to know how long it takes, on average, for a certain species of bacteria to divide watches 16 cells through a microscope and times how long it takes them to divide. She obtains the following data, in hours: 8, 6.6, 9, 7.4, 6.1, 8.9, 10, 8.1, 8.4, 8.3, 8.3, 8.4, 4.9, 7.8, 7.4, 6.3 Assuming the population standard deviation is o = 1.1, construct a 97% confidence interval for the average time it takes this species of bacteria to divide.

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