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Shear strength measurements derived from unconfined
Chapter 10, Problem 21E(choose chapter or problem)
Shear strength measurements derived from unconfined compression tests for two types of soils gave the results shown in the following table (measurements in tons per square foot). Do the soils appear to differ with respect to average shear strength, at the 1% significance level?
Soil Type I |
Soil Type II |
\(n_{1}=30\) |
\(n_{2}=35\) |
\(\bar{y_{1}}=1.65\) |
\(\bar{y_{2}}=1.43\) |
\(s_{1}=0.26\) |
\(s_{2}=0.22\) |
Equation Transcription:
Text Transcription:
n_1 = 30
bar {Y_1} = 1.65
s_1 = 0.26
n_2 = 35
bar {Y_2} = 1.43
s_2 = 0.22
Questions & Answers
QUESTION:
Shear strength measurements derived from unconfined compression tests for two types of soils gave the results shown in the following table (measurements in tons per square foot). Do the soils appear to differ with respect to average shear strength, at the 1% significance level?
Soil Type I |
Soil Type II |
\(n_{1}=30\) |
\(n_{2}=35\) |
\(\bar{y_{1}}=1.65\) |
\(\bar{y_{2}}=1.43\) |
\(s_{1}=0.26\) |
\(s_{2}=0.22\) |
Equation Transcription:
Text Transcription:
n_1 = 30
bar {Y_1} = 1.65
s_1 = 0.26
n_2 = 35
bar {Y_2} = 1.43
s_2 = 0.22
ANSWER:
Step 1 of 3
Because the samples are independent and large , we can use Large - Sample - Level Hypothesis Tests.