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Assessing the bending strength of a wooden roof. Refer to
Chapter 6, Problem 69E(choose chapter or problem)
Assessing the bending strength of a wooden roof. Refer to the Journal of the International Association for Shell and Spatial Structures (Aug. 2004) study to estimate the mean bending strength of imported white wood used on the roof of an ancient Japanese temple, Exercise 6.31 (p. 318). Suppose you want to estimate the true mean breaking strength of the white wood to within 4 MPa using a 90% confidence interval. How many pieces of the imported wood need to be tested? Recall that the sample standard deviation of the breaking strengths from the study was 10.9 MPa.
Questions & Answers
QUESTION:
Assessing the bending strength of a wooden roof. Refer to the Journal of the International Association for Shell and Spatial Structures (Aug. 2004) study to estimate the mean bending strength of imported white wood used on the roof of an ancient Japanese temple, Exercise 6.31 (p. 318). Suppose you want to estimate the true mean breaking strength of the white wood to within 4 MPa using a 90% confidence interval. How many pieces of the imported wood need to be tested? Recall that the sample standard deviation of the breaking strengths from the study was 10.9 MPa.
ANSWER:Solution
Step 1 of 1
We have to find how many imported wood pieces need to be tested
From the given problem
From the the tables