A bank of 10 machines requires regular periodic service. Machine running time and service time are both exponential. Machines run for an average of 44 minutes between service requirements, and service time averages six minutes per machine. What is the probability that a machine will have to wait for service with two operators

0.346

Step-by-step explanation:

Given:

Number of machines, n = 10

Average run time before servicing, R= 44 minutes

Service time, T= 6 minutes per machine

Required:

Find the probability that a machine will have to wait for service with two operators.

First find the service factor using the formula below:

X = 0.12

Given number of service operators,S = 2.

Using the finite queuing table, efficiency factor at S=2 & X=0.12 is 0.346.

Therefore, the probability that a machine will have to wait for service with two operators is 0.346

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.