SOLUTION: Among 35 radios, 27 are defective. An experiment consists of randomly choosing 9 radios. (Order is not important.) Find the probability that all 9 chosen radios are defective. a)

Question 472487: Among 35 radios, 27 are defective. An experiment consists of randomly choosing 9 radios. (Order is not important.) Find the probability that all 9 chosen radios are defective.
a) 0.2092
b) 0.3164
c) 0.1914
d) 0.2886
e) 0.0664
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

Choosing 9 Among 35 radios, 27 are defective

Ways of choosing 9 defective is 27C9

Total ways of choosing 9 is 35C9

P(9 chosen are all defective) = 27C9/35C9 = .0664



Probability: The number of desirable outcomes / the total number of outcomes.  

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