Blog

A single channel queuing system has an average service time of 16 minutes per customer, which is exponentially distributed. The manager is thinking of converting to a system with a constant service time of 16 minutes. The arrival rate will remain the same. The effect will be to:

Joe Ferris is a stock trader on the floor of the New York Stock Exchange for the firm of Smith, Jones, Johnson, and Thomas, Inc. Stock transactions arrive at a mean rate of 20 per hour. Each order received by Joe requires an average of 2.5 minutes to process. What is the mean service rate per hour?

During the early morning hours, customers arrive at a branch post office at an average rate of 45 per hour (Poisson), while clerks can handle transactions in an average time (exponential) of four minutes each. The minimum number of clerks needed to keep the average time in the system to under five minutes is

You have been called for a patient who has overdosed on drugs and alcohol. The patient is responsive to painful stimuli, has shallow respirations and is breathing at a rate of 6 times per minute and is exhibiting cyanosis. The pulse oximeter shows 82%. What is the priority treatment?

Which statement made by an EMT shows that she understands how to suction patients in a field setting?

Which instruction given by an EMT indicates the proper administration of nitroglycerin?

Your patient is a 56-year-old male complaining of chest pain. The patient describes the pain as “a heavy pressure” on his chest. Which component of the OPQRST mnemonic does this best describe?

Death (necrosis) of the heart muscle due to a lack of blood flow best desribes which condition?

What is the most common cause of an airway obstruction on an unconscious adult?

Which condition is best described a a disease where the lung tissue loses its elasticity due to exposure to toxins and results in the walls of the alveoli being destroyed?