A corporation has 11 manufacturing plants. Of these, 7 are domestic and 4 are located outside the United States. Each year a performance evaluation is conducted for 4 randomly selected plants. What is the probability that a performance evaluation will contain 3 plants from the United States?
A) 0.4242
B) 0.3776
C) 0.3523
D) 0.4696

Question

Quizplus · Accepted Answer

The probability of selecting 3 domestic plants out of 4 randomly selected plants is given by the hypergeometric distribution:P(X = 3) = (7 choose 3) * (4 choose 1) / (11 choose 4) = 0.4242

A Corporation Has 11 Manufacturing Plants