I have a discrete distribution:

with a chance of a delay (in hours)

I came out of 80 000 measurements to a table with max 40 h

**delay and the chance of each of them occuring**.

I would like to calculate what the chance is to have less delay then 12h, 24h. When I excecute 4 times the same process with the same probablity distribution.

Who could point me in the right direction?

Preferably something I can handle with Excel?

Best to fit a function?

Thanks!