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Length of Growing Seasons The growing seasons for a random
Chapter 7, Problem 20(choose chapter or problem)
Length of Growing Seasons The growing seasons for a random sample of 35 U.S. cities were recorded, yielding a sample mean of 190.7 days and the population standard deviation of 54.2 days. Estimate the true mean population of the growing season with 95% confidence. Source: The Old Farmers Almanac. 172.74 _ m _ 208.66
Questions & Answers
QUESTION:
Length of Growing Seasons The growing seasons for a random sample of 35 U.S. cities were recorded, yielding a sample mean of 190.7 days and the population standard deviation of 54.2 days. Estimate the true mean population of the growing season with 95% confidence. Source: The Old Farmers Almanac. 172.74 _ m _ 208.66
ANSWER:Step 1 of 2
Given:
For confidence level , determine using table (look up in the table, the z-score is then the found -score with opposite sign):