The target mean strength of the M-20 grade concrete is 27N/mm2, what is the value of standard deviation?

Questions › Category: Civil Engineering › The target mean strength of the M-20 grade concrete is 27N/mm2, what is the value of standard deviation?

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VideRime Staff asked 4 years ago

The target mean strength of the M-20 grade concrete is N/mm², what is the value of standard deviation?

a) 2.01

b) 3.5

c) 4.24 (Ans)

d) 5

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