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Name: The ground has been improved to increase the strength of a ground. The
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Description: The ground has been improved to increase the strength of a ground. The average compressive strength of 80 samples before improvement is 32 kg / cm2 and the standard deviation is 5.1 kg / cm2; The mean compressive strength of the 95 samples after recl

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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The ground has been improved to increase the strength of a ground. The average compressive strength of 80 samples before improvement is 32 kg / cm2 and the standard deviation is 5.1 kg / cm2; The mean compressive strength of the 95 samples after reclamation is 38 kg / cm2 and the standard deviation is 6.3 kg / cm2. Determine whether the improvement affects the strength of the soil in terms of mean and standard deviation at 3% significance level.

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