Calls arrive every 10 minutes on the average. What is the probability the next call will arrive within the next 15 minutes?

Look into Poisson Distribution.

The probability of x occurrences in an interval is

P(x)=\frac{{\mu}^{x}e^{-\mu}}{x!}

Look into Poisson Distribution.

The probability of x occurences in an interval is

P(x)=\frac{{\mu}^{x}e^{-\mu}}{x!}

So what's the answer? Lol :)

So whats the answer? lol :)

We are not supposed to directly give the answer, but to show how to get to the answer. Read the rules concerning homework and you'll see.