Mathematics
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StubbornAtom
  • Member for 7 years, 9 months
  • Last seen this week
  • Kolkata, India
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All Questions Answers
Score Newest
question
33
What is the most rigorous definition of a matrix?
Jun 4, 2016
answer
26
When not to treat dy/dx as a fraction in single-variable calculus?
Aug 28, 2016
answer
16
Convergence of Student's t-distribution to a standard normal
May 26, 2019
answer
15
Find expectation of $\frac{X_1 + \cdots + X_m}{X_1 + \cdots + X_n}$ when $X_1,\ldots,X_n$ are i.i.d
Sep 7, 2017
question
14
Evaluating $\int _{-100}^{100}\lfloor {x^3}\rfloor \,dx$
Jul 2, 2016
question
12
Definiteness of a general partitioned matrix $\mathbf M=\left[\begin{matrix}\bf A & \bf B\\\bf B^\top & \bf D \\\end{matrix}\right]$
May 14, 2017
question
12
Showing $E(S^2\mid \bar X)=\bar X$ for i.i.d Poisson random variables $X_i$
Aug 13, 2018
question
12
Distribution and moments of $\frac{X_iX_j}{\sum_{i=1}^n X_i^2}$ when $X_i$'s are i.i.d $N(0,\sigma^2)$
Nov 15, 2021
answer
10
UMVUE of $\frac{\theta}{1+\theta}$ and $\frac{e^{\theta}}{\theta}$ from $U(-\theta,\theta)$ distribution
Aug 21, 2018
question
10
Maximum area of a rectangle inscribed in a triangle is $1/2$ the area of triangle
Aug 17, 2016
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19
Distribution of $\frac{\sum_{i=1}^n X_iY_i}{\sum_{i=1}^n X_i^2}$ where $X_i,Y_i$s are i.i.d Normal variables
14
Constructing example showing $\mathbb{E}(X^{-1})=(\mathbb{E}(X))^{-1}$
14
Sign of product of standard normal random variables
14
Is $\frac1{n+1}\sum_{i=1}^n(X_i-\overline X)^2$ an admissible estimator for $\sigma^2$?
13
$(2Y-1)\sqrt X\sim\mathcal N(0,1)$ when $X\sim\chi^2_{n-1}$ and $Y\sim\text{Beta}\left(\frac{n}{2}-1,\frac{n}{2}-1\right)$ independently

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