Tree diameters for a certain species of tree are nor-mally distributed with a mean of 20 cm
Question:
(a) What is the probability that the diameter of a randomly chosen tree will be between 16 cm and 23 cm?
(b) Suppose we take a sample of n = 5 trees. What is the probability that the average of the 5 diameters will be between 16 cm and 23 cm?
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Related Book For 
Statistics For The Life Sciences
ISBN: 9780321989581
5th Edition
Authors: Myra Samuels, Jeffrey Witmer, Andrew Schaffner
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