Maurice Tutor

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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 408 Weeks Ago, 5 Days Ago
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 04 Dec 2017 My Price 7.00

Journal of Forest Engineering

Minimizing tractor skidding distance. Refer to the Journal of Forest Engineering (July 1999) study of minimizing tractor skidding distances along a new road in a European forest, presented in Exercise 8.73 (p. 379). The skidding distances (in meters) were measured at 20 randomly selected road sites. The data are repeated in the accompanying table and saved in the SKIDDING file. In Exercise 8.73, you conducted a test of hypothesis for the population mean skidding distance. Now conduct a test to determine whether the population median skidding distance is more than 400 meters. Use a = .10.

 

 

Exercise 8.73

 

Minimizing tractor skidding distance. Refer to the Journal of Forest Engineering (July 1999) study of minimizing tractor skidding distances along a new road in a European forest, presented in Exercise 7.44 (p. 319). The skidding distances (in meters) were measured at 20 randomly selected road sites. The data (saved in the SKIDDING file) are repeated in the accompanying table. Recall that a logger working on the road claims that the mean skidding distance is at least 425 meters. Is there sufficient evidence to refute this claim? Use a = .10.

 

 

Exercise 7.44

 

Minimizing tractor skidding distance. In planning for a new forest road to be used for tree harvesting, planners must select the location that will minimize tractor skidding distance. In the Journal of Forest Engineering (July 1999), researchers wanted to estimate the true mean skidding distance along a new road in a European forest. The skidding distances (in meters) were measured at 20 randomly selected road sites. These values are given in the accompanying table and saved in the SKIDDING file.

 

 

a. Estimate, with a 95% confidence interval, the true mean skidding distance of the road.

 

b. Give a practical interpretation of the interval you found in part a.

 

c. What conditions are required for the inference you made in part b to be valid? Are these conditions reasonably satisfied?

 

d. A logger working on the road claims that the mean skidding distance is at least 425 meters. Do you agree?

 

Answers

Maurice Tutor
(5)
Status NEW Posted 04 Dec 2017 07:12 PM My Price 7.00

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