The Binary Computer Company manufactures computer chips used in DVD players. Those chips are made with a 27% yield, meaning that 27% of them are good and the others are defective.
a. If one chip is randomly selected, find the probability that it is not good.
b. If two chips are randomly selected, find the probability that they are both good.
c. If five chips are randomly selected, what is the expected number of good chips?
d. If five chips are randomly selected, find the probability that they are all good. If you did get five good chips among the five selected, would you continue to believe that the yield was 27%? Why or why not?