The growing seasons for a random sample of 49 U.S. cities

Last updated: 7/26/2022

The growing seasons for a random sample of 49 U.S. cities were recorded, yielding a sample mean of 184.9 days and the population standard deviation of 54.4 days. Estimate for all U.S. cities the upper bound of the true mean of the growing season with 95% confidence. Round your answer to 2 decimal places.