It means that, as stated, the greatest criminals of the world are not those who would murder the defenseless, or commit other crimes; they are those who stand by and do nothing but watch.
Most probably not. But it should be close to the population mean if various conditions are met:For example, the population should consist of independent, [nearly] identically distributed variables,...
The mean distance is the same as the mean of a set of numbers,but this time, instead of them just being numbers, they're lengths. You just simply add up all the numbers and divide the total length,...
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