a piece of volcanic rock when held close to a geiger counter emits rad
Question
A piece of volcanic rock, when held close to a Geiger counter, emits radiation at the rate of one"click" per second on average. What is the probability that we must
wait at least 3 seconds for the first "click", given that the probability of the first "click" falling between times t = a and t = bis given by: the integral over time of e-t between a and b.tto