Answer:
with my own opinion the answer is b
Answer:
3 customers
Step-by-step explanation:
Rate of arrival (λ) = 15 per hour
Service rate (μ) = 20 per hour
The number of customers in a system given the arrival rate and the mean service rate is given by:

Applying the given data:

The average number of customers in the system is 3 customers.
Answer:
Sue // 6 More blocks
Step-by-step explanation:
Sue has more blocks because 34>28.
34-28 is 6 so sue has 6 more.
Answer:
A
Step-by-step explanation:
I may be wrong,If i am i apoligize fr the inconvenience!!
If not, Your very welcome.