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6. It is known that the diameter of Douglas fir trees is normally distributed with = 50cm and o = 12cm. (a) What is the probability that a randomly selected Douglas fir tree has a diameter greater than 73cm? € (b) What proportion of Douglas fir trees have diameter between 40 and 55cm? (c) Find the diameter, d, such that 30% of Douglas fir trees have diameters that exceed d.

6. It is known that the diameter of Douglas fir trees is normally distributed with = 50cm and o = 12cm. (a) What is the probability that a randomly selected Douglas fir tree has a diameter greater than 73cm? € (b) What proportion of Douglas fir trees have diameter between 40 and 55cm? (c) Find the diameter, d, such that 30% of Douglas fir trees have diameters that exceed d.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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< 12:34 Today 12:32 6. It is known that the diameter of Douglas fir trees is normally distributed with = 50cm and σ = 12cm. (a) What is the probability that a randomly selected Douglas fir tree has a diameter greater than 73cm? € (b) What proportion of Douglas fir trees have diameter between 40 and 55cm? (c) Find the diameter, d, such that 30% of Douglas fir trees have diameters that exceed d. ter of Douglas fir tres is normally distributed with as lity that a randomly selected Douglas fir tree has a d Douglas fir trees have diameter between 40 and 55cm? such that 30% of Douglas fir troes have diameters the Edit octor's office (i) LTE
Transcribed Image Text:< 12:34 Today 12:32 6. It is known that the diameter of Douglas fir trees is normally distributed with = 50cm and σ = 12cm. (a) What is the probability that a randomly selected Douglas fir tree has a diameter greater than 73cm? € (b) What proportion of Douglas fir trees have diameter between 40 and 55cm? (c) Find the diameter, d, such that 30% of Douglas fir trees have diameters that exceed d. ter of Douglas fir tres is normally distributed with as lity that a randomly selected Douglas fir tree has a d Douglas fir trees have diameter between 40 and 55cm? such that 30% of Douglas fir troes have diameters the Edit octor's office (i) LTE
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