As part of an Environmental S

timer Asked: Dec 11th, 2015

Question description

As part of an Environmental Studies class project students measured the circumference of a random sample of 20 Blue Spruce trees near Brainard Lake, Colorado. The sample mean circumference was 27.2 inches, and sample standard deviation is 5.6 inches. Find a 95% confidence interval for the population mean circumference of all Blue Spruce trees near this lake.

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