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Length of Growing Seasons The growing seasons for a random sample of 38 U.S. cities were recorded, yielding a sample mean of 191.6 days and

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Length of Growing Seasons The growing seasons for a random sample of 38 U.S. cities were recorded, yielding a sample mean of 191.6 days and the population standard deviation of 54.6 days. Estimate the true population mean of the growing season with 90% confidence. Round your answers to at least one decimal place.

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