StatisticsdrillPoisson: exactly k
A statistics problem from Statisticsdrill. Solve it with one answer box, with a fresh sample on every attempt and the worked steps and spreadsheet function in the answer, and it is checked the moment you submit.
The task
The number of returns per afternoon follows a Poisson distribution with a mean of 1.5. What is the probability of exactly 0? Round to 4 decimal places.
What this problem teaches
The formula: P(X = k) = e^(-λ) λ^k / k!.
A hint if you get stuck
P(X = k) = e^(-λ) λ^k / k!.
This problem is part of Pro
Pro unlocks all 53 problems, with worked solutions and progress saved to your account. The free problems work without an account.
You create a free account first, so Pro is attached to it.
Monthly is charged today and then every month until you cancel, in one click from your account page. Lifetime is one payment with no renewals. Full refund within 14 days of paying.