Let X be N ( mu, sigma ^2 )
Show that the points of inflection of the graph of the p.d.f. of X occur at x = mu +/- sigma.
Do I have to find the first derivative or something to check for points of inflection??
Let X be N ( mu, sigma ^2 )
Show that the points of inflection of the graph of the p.d.f. of X occur at x = mu +/- sigma.
Do I have to find the first derivative or something to check for points of inflection??