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 Dec 16 revised Is the skill to learn new math by reading textbook alone (no lectures) required when one becomes a PhD student? edited title Dec 16 revised Is the skill to learn new math by reading textbook alone (no lectures) required when one becomes a PhD student? edited title Nov 25 revised Moment generating function: why is $\int_{-\infty}^{\infty}\frac{1}{\sqrt{2\pi}}e^\frac{-(z-t)^2}{2} dz = 1$ deleted 2 characters in body Nov 25 revised Moment generating function: why is $\int_{-\infty}^{\infty}\frac{1}{\sqrt{2\pi}}e^\frac{-(z-t)^2}{2} dz = 1$ added 49 characters in body Nov 14 revised Does SSTR (sum of squares for treatments) = SSR (regression sum of squares)? edited title Nov 14 revised Does SSTR (sum of squares for treatments) = SSR (regression sum of squares)? added 59 characters in body Oct 27 revised Derivate of $(\sin \theta)^{n-1}$ added 2 characters in body Oct 25 revised What is the $P( |X-10| > 2)$ of a normal distribution when the mean is 10, and the standard deviation is 6? edited tags Oct 17 revised Why is the greatest and least values for each group in these 2 frequency distribution unknown? added 8 characters in body Oct 17 revised Calculating Variance of a binomial distribution using the standard formula $E(X^2) - \mu^2$ added 14 characters in body Oct 11 revised By convention $P[X=x] = 0$ for all x. How would you explain pdf $f(x) =3x^2$ (where x is between 0 and 1) when x =0.9 added 3 characters in body Oct 10 revised How can gender and class classification be dependent? edited title Oct 9 revised How can gender and class classification be dependent? deleted 7 characters in body Oct 9 revised How can gender and class classification be dependent? deleted 46 characters in body Oct 9 revised How can gender and class classification be dependent? deleted 13 characters in body Oct 9 revised How can gender and class classification be dependent? deleted 4 characters in body Oct 6 revised Is it possible to do this Poisson problem in Binomial? added 97 characters in body Oct 6 revised Is it possible to do this Poisson problem in Binomial? added 4 characters in body Oct 3 revised Performing hypothesis test for the difference of population means: paired comparisons edited title Oct 3 revised Performing hypothesis test for the difference of population means: paired comparisons edited title