Pr[|X −E[X]| ≥ a] = Pr[(x−E[x]) ≥ a] ≤ E[(x−E[x]) 2] a2 = Var[X] a2 1.3 Example: Coupon Collector Xi : # boxes bought when you have exactly i− 1 different coupons, and after buying these boxes, you have i different coupons. Let X = ∑ i∈nXi: # boxes one bought until at least one of every type of coupon is obtained. Let pi be the probability of obtaining a new coupon when we have exactly i−1 diff...

the aim of this study was to investigate the pharmacokinetic profiles of baicalin, wogonoside, baicalein and wogonin after oral administration of pure baicalin, radix scutellariae and scutellariae-paeoniae couple extracts were administered and the pharmacokinetics profiles were compared between normal and ulcerative colitis rats. the plasma concentrations of the four flavonoids were determined ...