Pr áce je inspirov ána stejnojmennou knihou Daniela Kahnemana. Jej ím cí lem je zamyslet se nad statistick ým vyhodnocování m experimentů, které jsou v knize popsané, a n ěkter ý z nich zopakovat. Prostor je v ěnov án vhodn ě stanovené velikosti v ýb ěru p ři testov aní hypot éz a otázce, zda je velikost v ýb ěru podhodnocov ána. D ále se pr áce zab ýv á testov án ím vlivu takzvan ého ukotvení . K tomu je pou žita anal ýza rozptylu.The thesis is inspired by the book of the same name written by Daniel Kahneman. The aim of the thesis is to deal with a statistical evaluation of the experiments, which are described in the book, and to repeat one of them. Main focus is on an appropriately determined sample size and an issue, wheter is the sample size underestimated. The thesis also deals with the testing of an eff ect of so called anchoring, to which analysis of variance is used.