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visits member for 2 years, 2 months
seen Nov 19 at 18:06

Nov
15
answered What is degree of freedom in statistics?
Nov
15
answered simplify natural logarithm
Nov
15
comment simplify natural logarithm
no.. i'll write the answer as it has bypassed the comment stage..
Nov
15
comment simplify natural logarithm
Hi, Welcome to math.SE. Please try to use $\LaTeX$ here. If $C$ is a constant, it is better to cancel $\frac 12$ from both sides.. and then use $\ln a - \ln b=\ln \frac ab$
Nov
15
comment Capping part of a sum
if I understand meaning of capped spend correctly,(it being maximum amount you can spend on x), then it is nothing but $15 \% $ of total spend. What is the question then?? Please clarify the question..
Nov
15
comment Finding the locus
Yes, that was what I meant.. Just wanted him to do this work . :-P
Nov
15
comment Why does the distribution of the probability change this way?
I don't think your question is clear. What are you asking? Does Bob wants to conduct Testing of Hypothesis for $H_0 : p \sim U(0,1) \text {vs } H_1 : p \sim Beta (3,1)$? (If he does, it might explain the question a little bit.) Please consider editing your question.
Nov
15
answered Finding the locus
Nov
15
answered $I_m - AB$ is invertible if and only if $I_n - BA$ is invertible.
Nov
15
comment Positive integers less than $N$ not divisible by $4$ or $6$
lol ;-), happened to me a lot of times..
Nov
15
answered Positive integers less than $N$ not divisible by $4$ or $6$
Nov
14
revised Example of a general random variable with finite mean but infinite variance
clarified the answer..
Nov
13
comment What's the proper way for calculating first quartile?
math.stackexchange.com/questions/207090/… please check this..
Nov
13
comment Example of a general random variable with finite mean but infinite variance
Distribution is defined for $\alpha > 0$ but the question is satisfied for $\alpha \in (1,2]$ as then expectation is finite and variance infinite.., for $\alpha \leq 1$ expectation is infinite, variance doesn't exist.. but
Nov
13
revised chi-square distribution: determining the constants c and d
latexified
Nov
13
answered Example of a general random variable with finite mean but infinite variance
Nov
13
comment chi-square distribution: determining the constants c and d
Hi, What have you tried? IMO you cannot find such values without using tables..
Nov
13
suggested approved edit on chi-square distribution: determining the constants c and d
Nov
11
comment Probability of winning in the lottery
Check the comment of Ross Millikan, he did the question assuming you need to get exactly $3$ right. Do similarily for exactly $4$ right and exactly $5$ right. Then you get total no of favourable outcomes. Alternatively, find the complementary probability, i.e getting less than $3$ as that would be easier..
Nov
11
comment Probability of winning in the lottery
Hi, welcome to math.SE. Please clarify your question as question is not clear.Like what happens when we guess more than $3$ numbers? Are the rolled numbers different? Thanks.