What is the average time a car is in the system

Assignment Help Operation Management

Reference no: EM13221657

Automobiles arrive at a drive through window at a post office at the rate of 4 every 10 mins. The average service time is 2 mins. The poisson distribution is appropriate for the arrival rate and service times are exponentially distributed.

A. what is the average time a car is in the system
B. What is the average # of cars in the system
C. what is the average # of cars in the system behind the customers recieving service
D. what is the % of time that the postal clerk is busy
E. what is the probability of 2 or more customers in the system

Reference no: EM13221657

Questions Cloud

Find the mean and the variance of x : Suppose a random variable X has a discrete uniform distribution on the first m positive integers. Find the mean and the variance of X. What are the mean and the variance if X equals the outcome when rolling a fair six-sided die

Determine the molecular weight of the solute : A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.

General issues you might deal with as a manger : What type of experiences and training you think you will need today to achieve a management position like in a Humane Society Animal Shelter organization.

Evaluate the boiling point of a solution : Calculate the boiling point of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.

What is the average time a car is in the system : Automobiles arrive at a drive through window at a post office at the rate of 4 every 10 mins. The average service time is 2 mins. The poisson distribution is appropriate for the arrival rate and service times are exponentially distributed.

Determine the real interest rate for years 1978 through 1982 : determine the real interest rate for the years 1978 through 1982 assuming that people expect the rate of inflation to be the average rate of inflation in the two previous years. Year: 1977 1978 1979 1980 1981 1982 Nominal interest rate: 5.6% 7.6% ..

Define the vapor pressure of pure propyl chloride : The vapor pressure of pure propyl chloride is 347 torr at 25°C and that of pure propyl bromide is 133 torr at 25°C. Assume that the solution is an ideal solution.

How many boxes of each size should the banks design : The bank believes it wil need at least 350 total boxes, at least 80 of which should be large. IT hopes to maximize revenue for safety deposit boxes. How many boxes of each size should the banks design provide?

Determine what is the expected return of the stock : Suppose that the change in price of stock is a random variable X that can assume only the four different values -20, 0, 10, and 30, and that P(X=-20)=0.1,P(X=0)=0.4,P(X=10)=0.3,and P(X=30)=0.2. What is the expected return of the stock

User Account

All Pages