The variable is how many tanks there are because he wants to know how many fish there are in the whole aquarium and we already know each tank contains five fishes but we just need to know how many tanks there are. :)

6 0

3 years ago

3. Students arrive at an ATM machine in a random pattern with an average inter-arrival time of 3 minutes. The length of transact

svp [43]

Answer:

The probability that a student arriving at the ATM will have to wait is 67%.

Step-by-step explanation:

This can be solved using the queueing theory models.

We have a mean rate of arrival of:

$\lambda=1/3\,min^{-1}$

We have a service rate of:

$\mu=1/2\,min^{-1}$

The probability that a student arriving at the ATM will have to wait is equal to 1 minus the probability of having 0 students in the ATM (idle ATM).

Then, the probability that a student arriving at the ATM will have to wait is equal to the utilization rate of the ATM.

The last can be calculated as:

$P_{n>0}=\rho=\dfrac{\lambda}{\mu}=\dfrac{1/3}{1/2}=\dfrac{2}{3}=0.67$

Then, the probability that a student arriving at the ATM will have to wait is 67%.

4 0

4 years ago

Ava is raising money for a school trip by selling bags of chips and candy bars. The price of each bag of chips is $1.75 and the

Verdich [7]

Answer:

1.529

Step-by-step explanation:

26 divided by 17 and it equl to 1.529

6 0

3 years ago