Suppose a computer technical support representative can answer calls from 8 customers in an hour. what is the probability that a customer will be on hold less than 15 minutes?

Option d

Step-by-step explanation:

We need 2 fundamental data to solve this problem.

1.- Average number of clients attended in 1 hour.

2.- Time in which it is expected that a client will be attended.

They tell us that the average number of clients served in an hour is m = 8

They tell us to calculate the probability that the client will be seen in less than 15 minutes.

But the time t in the formula is given in hours.

Therefore we must write 15 minutes according to hours.

We know that .

So:

.

Now we substitute in the formula and to find P.