Question

thirteen popular brands of beer finite

Thirteen popular brands of beer are used in a blind taste study for consumer recognition Complete parts (A) and (B) below. (A) If 4 distinct brands are chosen at random from the 13 and if a consumer is not allowed to repeat any answers, what is the probability that all 4 brands could be identified by just guessing? Let the sample space S be the set of ways that the 4 distinct brands can be chosen from the 13 popular brands of beer. The number of elements in the sample space is n(s) = 0 (Type a whole number.) The probability is (Type an integer or a simplified fraction.) (B) If repeats are allowed in the 4 brands chosen at random from the 13 and if a consumers allowed to repeat answers, what is the probability that 14 brands are identified correctly by just guessing? The probability is (Type an integer or a simplified fraction)

Answer 1

okulion -birkom popular broode of hips called in Desired information is gilan by 4 dillerat brand as ramdon from the brand. Coluate choosen at random from Co ci dillinct brasso arc o find neo]:- the hale to obtained the lake of new by rising gilan Chta is, - sto] is Ibca sis) yuxuda 13-X SEXLIX-X xxwxgxi 7715 Therefore non=7715 e probability We have to oblained the probability by casing given dat is

> probability is PL 4 diltimc-ts brand chose randons 13) identical Conectively is Elere, llots 1415 | 715 Therefore 715 u districts brandi im u ① If coepeats are allowed Received probability is B the probability that the 4 brands lale have to obtained ora Efere Spookability plx=415 134 (134) s 26.56 Therefore Received probablity is 28561