Suppose that x is a numerical vector in R. Which command gives the root mean square...

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Suppose that x is a numerical vector in R. Which command gives the root mean square of x? O sqrt(sum(X- mean(X))^2/length(X)) O sqrt(sum(X- mean(X))) O sqrt(mean(X- mean(x))^2) O sqrt(mean((X- mean(x))^2)) Suppose that x is a numerical vector in R. Which command gives the root mean square of x? O sqrt(sum(X- mean(X))^2/length(X)) O sqrt(sum(X- mean(X))) O sqrt(mean(X- mean(x))^2) O sqrt(mean((X- mean(x))^2))

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