user133466
Reputation
486
Top tag
Next privilege 500 Rep.
Access review queues
 Oct6 comment Is it possible to do this Poisson problem in Binomial? ive added the second part of the problem, can you help convert that into binomial? Thank you very much!! Oct6 revised Is it possible to do this Poisson problem in Binomial? added 97 characters in body Oct6 comment Is it possible to do this Poisson problem in Binomial? i got it! going back to question (a) i tried to find the prob $(\frac{364}{365})^{80000}$ why is that wrong? Oct6 comment Is it possible to do this Poisson problem in Binomial? Hi Henry, question (b) asks (b) both partners celebrated their birthday on the same day of the year. the solution says The probability that an arbitrary couple were born on the same day of the year is $\frac{1}{365}$. why is that? why isn't it the same $\frac{1}{365^2}$ Oct6 revised Is it possible to do this Poisson problem in Binomial? added 4 characters in body Oct6 asked Is it possible to do this Poisson problem in Binomial? Oct5 accepted Performing hypothesis test for the difference of population means: paired comparisons Oct5 comment Performing hypothesis test for the difference of population means: paired comparisons @MichaelChernick to summarize, I cannot use the 2 sample independent t test because there's a strong correlation (or dependence) between the two variables. The experimental design is better suited with paried comparisons. correct? Oct4 comment Why does negative binomial random variable uses ${n-1 \choose r-1}$ instead of ${n \choose r}$ as coefficient? This is a good answer, Thank you! however what I don't understand is that with ${n-1 \choose r-1}$ aren't we skipping the last trial? It's a guaranteed success, but we shouldn't ignore it Oct4 comment Why does negative binomial random variable uses ${n-1 \choose r-1}$ instead of ${n \choose r}$ as coefficient? i understand r-1 success in n-1 trial part, but the last trial must be a success then that makes it ${n \choose r}$... if we do ${n-1 \choose r-1}$ we lose the last trial! Oct4 comment Performing hypothesis test for the difference of population means: paired comparisons @MichaelChernick why do you think using the formula for 2 sample t test is incorrect in this scenario? I think we can use it because has been used to determine difference of population means. my thoughts are, if anything, this and the paired t test should come to the same conclusion... Oct4 asked Why does negative binomial random variable uses ${n-1 \choose r-1}$ instead of ${n \choose r}$ as coefficient? Oct4 comment Performing hypothesis test for the difference of population means: paired comparisons @MichaelChernick yes, thank you for answering, but it looks like you have discussed the topic in CV, but Im wondering what is CV... Oct4 comment Performing hypothesis test for the difference of population means: paired comparisons Yes! an answer!!! Michael you're AWSOME!!!! Oct4 comment Performing hypothesis test for the difference of population means: paired comparisons thanks for answering michael, what exactly is a CV? Oct3 revised Performing hypothesis test for the difference of population means: paired comparisons edited title Oct3 revised Performing hypothesis test for the difference of population means: paired comparisons edited title Oct3 revised Performing hypothesis test for the difference of population means: paired comparisons added 20 characters in body Oct3 asked Performing hypothesis test for the difference of population means: paired comparisons Sep30 awarded Cleanup