Mathematics · Probability and Statistics
Statistical based quality control for concrete is carried out for a highway project in which 37 concrete samples were tested randomly. The average strength was found to be 40 MPa with a variance (square of deviation) of 11.11 MPa2. What is the standard deviation of the test samples?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 18.33 MPa
- 26.33 MPa
- 33.33 MPa✓
- 44.33 MPa
Correct answer
3.33 MPa
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