Assume that the box contains 4 defective widgets and 13 acceptable widgets. There are 4 inspectors, each of whom selects a widget from the box at random, inspects it, and then replaces it in the box. Each inspector makes his or her inspection at a different time.
2006-10-09 13:16:21 · 3 answers · asked by Diggler AKA The Cab Driver 1 in Science & Mathematics ➔ Mathematics
What is the probability that at least one inspector will find a defective widget?
2006-10-09 13:53:50 · update #1
Let's look at the probability that no one finds a defective one. For each inspector not finding a defective has probability 13/17. None finding a defective one has probability (13/17)^4. At least one of them finding a defective widget then has probability 1-(13/17)^4.
2006-10-09 18:16:38 · answer #1 · answered by firat c 4 · 0⤊ 0⤋
and the question is???
to hazard a guess,
the probability that the widgets are acceptable; the probability that none of the inspectors found a defect would be
(13/17)^4
or
the probability that all 4 inspectors selected a defective widget
(4/17)^4
???????
2006-10-09 20:28:59 · answer #2 · answered by Gemelli2 5 · 0⤊ 0⤋
what is the question?
2006-10-09 20:18:11 · answer #3 · answered by jsfan2510 2 · 0⤊ 0⤋