A researcher wants to conduct a genetic study using 25 randomly-selected volunteers. He has a volunteer pool of 30, composed of 15 males and 15 females. What is the probability of 12 male and 13 female volunteers OR 13 male and 12 female volunteers being selected at random for the study?
A. 17/522
B. 455/522
C. 105/522
D. 175/261

Question

A researcher wants to conduct a genetic study using 25 randomly-selected volunteers. He has a volunteer pool of 30, composed of 15 males and 15 females. What is the probability of 12 male and 13 female volunteers OR 13 male and 12 female volunteers being selected at random for the study?
	A.	17/522
	B.	455/522
	C.	105/522
	D.	175/261

anonymous · Answer

@davi0024 @jdoe0001 @Mr.Expensive @SolomonZelman @sourwing @kropot72 @YanaSidlinskiy @Loser66 @FibonacciChick666 @Grazes

fibonaccichick666 · Answer

So what's the probability of 12 males to start?

anonymous · Answer

Are u supposed to set it up like 12C13

fibonaccichick666 · Answer

12C13?

anonymous · Answer

Thats how my teacher told me to set it up. Its a formula

fibonaccichick666 · Answer

ohhh you mean $$_{12}C_{13}$$ but not quite, let's start here, what does that formula stand for?

anonymous · Answer

I was told u used that when u Combine

fibonaccichick666 · Answer

Well, My question is, the combination symbol C, what does that stand for?

anonymous · Answer

Does it stand for the Total?