In a sample of 26 hand-held calculators, 20 are known to be nonfunctional. If 6 of these calculators are selected at random, what is the probability that exactly 4 in the selection are nonfunctional? Round to the nearest thousandth.

A. 0.667
B. 0.316
C. 0.769
D. 0.300
E. 0

Question

In a sample of 26 hand-held calculators, 20 are known to be nonfunctional. If 6 of these calculators are selected at random, what is the probability that exactly 4 in the selection are nonfunctional? Round to the nearest thousandth.
	
A. 0.667
B. 0.316
C. 0.769
D. 0.300
E. 0

anonymous · Answer

20C4/ 26C6

anonymous · Answer

Ok so when I do that though I get 0.021....?

anonymous · Answer

I can see where you came up with how to solve it, but the answer doesn't match up?

anonymous · Answer

yeah its right..it doesnt match up thougfh

anonymous · Answer

That's why I was confussed....what would be your guess?