Answer
Let $Δt$ be an interval of length 1. That is, $Δt=1~unit~of~measurement$
$λ=\frac{average~number~of~occurences}{1~unit~of~measurement}$
$t$ is an interval of fixed length. We are going to evaluete the probability of obtaining $x$ successes in this interval.
Work Step by Step
Given above.
