Recent content by srhjnmrg

Have the following question and just wondering if my solution is correct Let g(x)= x^5+3x-1. Show that there are no distinct points x_1, x_2 in R such that g(x_1)=g(x_2). Proof by contradiction. Assume we have two solution x_1<x_2 in ℝ, i,e g(x_1)+g(x_2)=0, since g is differentiable on...

Looking at obtaining the unbiased estimator of σ^2, i know how to do it for σ, to obtain 1/x(bar), was wondering how to obtain for σ^2, i guess you just don't square bot sides. It should tale the form of kƩ(x_i)^2. many thanks any help would be much appreciated.