Hi everyone,(adsbygoogle = window.adsbygoogle || []).push({});

I am stuck on the problem below. I think it has something to do with Poisson Process??

I would really appreciate it if someone could point me in the right direction.

An electronic switching device occasionally malfunctions and may need to be replaced. It is known that the device is satisfactory if it makes, on average no more than .2 errors per hour. A particular five hour period is chosen as a “test” on the device. If no more than 1 error occurs, the device is considered satisfactory. What is the probability that a satisfactory device will be mis- diagnosed as “unsatisfactory” on the basis of the test?

Thanks

AJ

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Hopelessly Stuck!

**Physics Forums | Science Articles, Homework Help, Discussion**