Right, "1 in 10 people who apply to the army" is not a representative sample. But the 1 in 10 people measurement isn't just people who apply to the army. It's everyone. About 1 in 7 people have an IQ below 85, which is close to the US Army's requirement for enlistment (they use a different test). So the actual number is a bit higher.
Uh, IIRC, similar figures were obtained from draft intakes...
Although such did exclude avoiders / evaders / deferrers...
I'm reminded of the 'Beverly Hillbillies' sight-gag where 'Jethro' briskly whittles Army test's wooden pegs to make them fit shaped holes in board. Completed within allotted time, that counted as a 'Pass'...
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u/Huecuva Dec 18 '19
The US military did a study and determined that 1 in every 10 people are too stupid to even be trained to do anything.