An incubation period is a time between when you contract a virus and when your symptoms start. By surveying randomly selected local hospitals, a researcher was able to obtain a sample of incubation periods of 19 patients, and the sample average was found to be 5.34 days. Assume that the population standard deviation is 1.7 days. Construct a 98% confidence interval for the average incubation period of the novel coronavirus. You may also assume that the sample is from a normal population. Confidence interval:(, ) Interpretation: We are % confident that the average incubation period of the novel coronavirus is between days and days.

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