poisson

Hello.

I am not sure here why the answer is not working out.
I used poisson with mean 3.5 and to find the P(X=1) and not working.
I also tried with X=4 and also not.

The question is attached. Thank you

It's talking about the same hour. If it was the next hour then P(X=1) would be correct.

Here you've looking at conditional probability. What's the probability that exactly four occurred, given that at least three occurred.

Thank you for your assistance. Yes I see. Therefore we have
P(X=4)/P(X>=3)

Correct?

i clicked on this thinking it would be something weird about fish but boy was i wrong lol.
(poisson is fish in french) (or something similar i didnt use that word much)

i clicked on this thinking it would be something weird about fish but boy was i wrong lol.
(poisson is fish in french) (or something similar i didnt use that word much)

Agreed.

omg lmao
Its FurtherMaths A-level

i clicked on this thinking it would be something weird about fish but boy was i wrong lol.
(poisson is fish in french) (or something similar i didnt use that word much)

omg lmao
Its FurtherMaths A-level