PDF / Normal Distribution Q?

[MidnightSky]

Hi,

I'm studying for an exam and I got stuck on this question.

The number of ants observed crossing a path is 15 per day, on average. What is the probability today that 15 ants will be seen?

No idea how to tackle the question,

thanks for all the help!

 

[renegade05]

Is this a Poisson process?

 

[MidnightSky]

It's quite possible, I just know it falls under stats and have obviously not reviewed sufficiently to be answering questions.