Statistic - Binomial distr.

Question

Aufgabe:

3 vacant positions of a commission shall be filled from a group of 3 men and 4 women. Compute the probabilities following a probability notion you are familiar with for the case that the person are randomly selected. Each person can at maximum obtain one position. (a) at least one position is filled by a woman. (b) all positions are filled with women.

Answer 1

a) 1- 1/(7über3) = 0,971

b) (4über3)*(3über1)/(7über3) = 0,343

Comments

Vielen Dank - stimmt die 2. Formel so:

(Anzahl Frauen über Anzahl Positionen) * (Anzahl Positionen über (wieso 1?) / (Total Personen über Anzahl Positionen)