 |
| ||
| |||
|
| Math Central | Quandaries & Queries |
|
Question from x, a student: a box consists of 10 light bulbs inspected by the following procedure: 2 bulbs are chosen at random without replacement. the box is only accepted if both bulbs work. suppose that the box contains 1 defective bulb. what is the probability of accepting the box? |
Hi,
The number of ways of choosing 2 bulbs from 10 bulbs is 10 choose 2. The number of outcomes that will result in accepting the box is the number of ways of choosing 2 bulbs from the 9 non-defective bulbs.
What is the probability of accepting the box?
Penny
| ||
| ||
| ||
 |
 |
|
Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.