Mathematics - Statistics Question with Solution | TestHub

Let the observation$x_i\left(1\le i\le 10\right)$satisfy the equations$\sum _{i=1}^{10}\left(x_i-5\right)=10$,$\sum _{i=1}^{10}{\left(x_i-5\right)}^2=40$. If$\mu$and$\lambda$are the mean and the variance of the observations,$x_1-3,x_2-3,....,x_{10}-3,$then the ordered pair$\left(\mu ,\lambda \right)$is equal to: