IDNStudy.com, ang iyong destinasyon para sa mabilis at kaugnay na mga sagot. Ang aming komunidad ay handang magbigay ng malalim at maaasahang mga sagot, anuman ang kahirapan ng iyong mga katanungan.

Of 10 employees, 3 have been with the college faculty for five or more years. If 4 college faculty are chosen randomly from the groupof 10, what is the probability that exactly 2 will have 5 ore more years?

Sagot :

[P(3,2) + P(7,2)]/P(10,4)= 48/5040

P(3,2) because there 3 people and you just need 2. P(7,2) is the other random people who shouldn't be part of 3 peeps who are more than five years. We add because they are both requirements... P(10,4) because 10 taken 4

I hope its correct... Please tell me if it is...