Question 18

CENAT1 markNeeds review
The frequency distribution of the compressive strength of 20 concrete cube specimens is given in the table:
f (MPa)
Number of specimens with compressive strength equal to f
23
4
28
2
22.5
5
31
5
29
4
If

is the mean strength of the specimens and

is the standard deviation, the number of specimens (out of 20) with compressive strength less than

is ______

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2018CE

GATE CE 2018 · Paper 1

Civil Engineering · Original paper archive

Section
Civil Engineering
Question type
Numerical answer (NAT)
Marks
1 mark

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