A sample of 20 specimens of soil was tested under shear, and water absorption tests. 8 of them failed in shear test, while 4 was failed in water absorption test and 2 failed in both. Find the following probabilities if a random sample is selected? 1-Failed in one of them at least? 2-Failed in one of them at most? 3-If it is failed in shear to be failed in absorption? 4-1f it is good in absorption to be bad in shear?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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A sample of 20 specimens of soil was tested under shear, and water absorption tests.
8 of them failed in shear test, while 4 was failed in water absorption test and 2 failed
in both. Find the following probabilities if a random sample is selected?
1-Failed in one of them at least?
2-Failed in one of them at most?
3-If it is failed in shear to be failed in absorption?
4-1f it is good in absorption to be bad in shear?
Transcribed Image Text:A sample of 20 specimens of soil was tested under shear, and water absorption tests. 8 of them failed in shear test, while 4 was failed in water absorption test and 2 failed in both. Find the following probabilities if a random sample is selected? 1-Failed in one of them at least? 2-Failed in one of them at most? 3-If it is failed in shear to be failed in absorption? 4-1f it is good in absorption to be bad in shear?
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