Question 581792
A lot of portable radios contain 15 good radios and 3 defective ones. If two are selected and tested, find the probability that at least one will be defective.
--------
Binomial with p(defective) = 3/18 and p(good) = 15/18
----
P(>= 1 defective) = 1 - P(none defective)
---
= 1 - (15/18)^2
---
= 0.3056
=============
Cheers,
Stan H.