2 problems

Let $\mathbf{X}^{(1)},\mathbf{X}^{(2)},\ldots$ be independent and identically distributed $d$-dimensional observations with independent $\operatorname{Exponential}(1)$ coordinates,…

Let $d\geq 2$ and let $\mathbf{X}^{(1)},\mathbf{X}^{(2)},\ldots$ be independent and identically distributed $d$-dimensional observations with independent…