Question: A forester measures 100 needles off a pine tree and finds = 3.1 centimeters and s = 0.7 centimeter. She reports that a 95% confidence

A forester measures 100 needles off a pine tree and finds = 3.1 centimeters and s = 0.7 centimeter. She reports that a 95% confidence interval for the mean needle length is

(a) Is the statement correct?
(b) Does the interval (2.96, 3.24) cover the true mean? Explain.

0.7 100 to 3.11.960.7 or (2.96, 3.24) + 1.96 /100

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