Fix the default value of the argument corrected in mean_and_std

src/moments.jl

@@ -114,7 +114,7 @@ Finally, bias correction is applied to the
 standard deviation calculation if `corrected=true`.
 See [`std`](@ref) documentation for more details.
 """
-function mean_and_std(x; corrected::Bool=true)
+function mean_and_std(x; corrected::Bool=false)
     m = mean(x)
     s = std(x, mean=m, corrected=corrected)
     m, s