A testing organization wishes to rate a particular brand of television. Six TVs are selected at random from stock. If nothing is found wrong with any of the six, the brand is judged satisfactory.
a. What is the probability that the brand will be rated satisfactory if 10% of the TVs actually are defective?
b. What is the probability that the brand will be rated satisfactory if 20% of the TVs actually are defective?
c. What is the probability that the brand will be rated satisfactory if 40% of the TVs actually are defective?