3. A civil engineer is interested in assessing the variation of shear strength of clay layers in a site of interest for different depths. After completing CU triaxial tests, the sample mean for the clay shear strength 40 kPa and the standard deviation was 15.5 kPa are obtained for the depth of 3 m from ground surface. For the following conditions:a. Calculate 99% CI for the population mean μ. Write down your interpretation.b. Explain why the size of CI changed between parts a - c. 3. A civil engineer is interested in assessing the variation of shear strength of clay layers in a siteof interest for different depths. After completing CU triaxial tests, the sample mean for the clayshear strength 40 kPa and the standard deviation was 15.5 kPa are obtained for the depth of 3 mfrom ground surface. For the following conditions:a. Calculate 99% CI for the population mean µ. Write down your interpretationb. Explain why the size of CI changed between parts a - c

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Answered: 3. A civil engineer is interested in…

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter12: Shear Strength Of Soil

Section: Chapter Questions

Problem 12.13P

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3. A civil engineer is interested in assessing the variation of shear strength of clay layers in a site of interest for different depths. After completing CU triaxial tests, the sample mean for the clay shear strength 40 kPa and the standard deviation was 15.5 kPa are obtained for the depth of 3 m from ground surface. For the following conditions:

a. Calculate 99% CI for the population mean μ. Write down your interpretation.
b. Explain why the size of CI changed between parts a - c.

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