a company that manufactures computer chips. when testing the chips after they come off the production line, the company knows that a chip will be defective 10% of the time, what is the probability that out of 50 chips at least one is defective?

Question

anonymous · Answer

i think is 1-P(none are defective)

kropot72 · Answer

The probability that none of the 50 chips will be defective is
$$P(0\ defective)=\left(\begin{matrix}50 \ 0\end{matrix}\right)0.1^{0}0.9^{50}=?$$
When you have found this probability, subtract it from 1 to find the required probability.

anonymous · Answer

it is the same that 0.9^50

kropot72 · Answer

Yes. So the required probability is given by
1.0000 - (0.9)^50