Posted by **ashley** on Wednesday, February 10, 2010 at 10:32pm.

The average number of radioactive particles passing through a counter during 1 millisecond in a lab experiment is 4. What is the probability that more than 2 milliseconds pass between particles?

- statistics -
**PsyDAG**, Thursday, February 11, 2010 at 11:48am
What is the variability of this count? More information needed.

- statistics -
**John**, Wednesday, February 17, 2010 at 4:29am
I've been working this out and can't get the answer shown in the book...I use mu = 1/4 thus lambda = 4 P(X > 2) = 1-(1-F(x)) = e^-4x = e^-8 This is not the answe given however so I am lost on this one.

## Answer This Question

## Related Questions

- college - The average number of radioactive particles passing through a counter ...
- probabilities - A radioactive source of material emits a radioactive particle ...
- chemistry - I got E) for the first and couldn't figure out the other one. Can ...
- chemistry - I got E) for the first and couldn't figure out the other one. Can ...
- Statistics - Here is my question: The size of dust particles was measured in a ...
- Science - 13.)How can substance A and B be compared? Choose all that apply. A.)...
- Physics - A Geiger counter measures redioactive decay by registering the ...
- Chemistry - Why during melting, particles gain energy and vibrate more, until ...
- Probability and Statistics - The number of calls that arrive under a particular ...
- probability and statistic - Suppose that the number of asbestos particles in a ...

More Related Questions