CodeDesk Inc matches programmers with freelance jobs. They have 34 employees who staff theironline chat room. They receive on average 235 chat requests per hour and the average chat sessiontakes 3 minutes to complete (i.e. from start to finish).Instruction: Do not round your intermediate and round final answer to nearest integer.On average how many chat sessions are active (i.e., startedbut not completed)? (Round to nearest integer)chat session

Given data Flow rate = 235 chats per hour =23560=3.92 request per minutes Flow time = 3 minutes…

Answered: CodeDesk Inc matches programmers with…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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CodeDeskInc matches programmers with freelance jobs. It has 30 employees who staffits online chat room. It receives, on average, 240 chat requests per hour, and the average chat session takes 5 minutes to complete (i.e., from start to finish). On average, howmany chat sessions are active (i.e., started but not completed)?
Which of the following captures the idea of Andon?(a) Examples of this include workers having to make unnecessary movements (i.e.,excessive reaching or walking to get tools or parts), working on parts that are defective,and idle time.(b) A system that enables a line worker to signal that he or she needs assistance from hisor her supervisor, for example, in the case of a defect. It is used to implement the jidokaprinciple.(c) A brainstorming technique that helps structure the process of identifying underlyingcauses of a (usually undesirable) outcome.(d) As an example of this philosophy, workers in the factory have notebooks at theirworkstations that they use to jot down improvement ideas.(e) A method that controls the amount of work-in-process inventory.(f) If an automotive assembly plant used this technique, the adjacent cars on an assemblyline would be mixed models (e.g., Model A with sunroof, Model A without sunroof,Model B, Model B with sunroof) in proportions equal to customer…
The OR is available for 12 hours a day; the hospital has decided to not perform any procedures between 7pm and 7am. This time is equally divided across three surgeons. The standard procedure time for the knee surgery done at the clinic is 1h. The cleaning and housekeeping that needs to happen after each procedure takes 20 minutes. Almost all of this time could be saved if the cleaning crew were notified earlier on. 10 minutes are spent on patient preparation / anesthesia work before each procedure. (Note: this is not part of the 60-minute procedure time). Proposals have been evaluated to move these 10 minutes to outside the OR, and there exists no medical reason that would prohibit doing this.) A surgeon only starts a case if all of the work associated with the case (preparation, procedure, and cleaning) can be completed in the 4h allotted to each surgeon. Surgeons never start BEFORE their allotted time. Though the clinic aims to operate 7 days a week, holidays, vacation, and…
An engineering i rm retains a technical specialist to assist four design engineers workingon a project. The help that the specialist gives engineers ranges widely in time consumption.The specialist has some answers available in memory, others require computation,and still others require signii cant search time. On the average, each request for assistancetakes the specialist one hour.The engineers require help from the specialist on the average of once each day. Becauseeach assistance takes about an hour, each engineer can work for seven hours, on the average,without assistance. One further point: Engineers needing help do not interrupt if thespecialist is already involved with another problem.Treat this as a i nite queuing problem and answer the following questions:a. How many engineers, on average, are waiting for the technical specialist for help?b. What is the average time that an engineer has to wait for the specialist?c. What is the probability that an engineer will have to wait…
1. Suppose that as part of Bob’s early (unsuccessful) experiment with cloud based surveys, the authentication system allows the user to attempt 100 passwords per second, but the system locks when the authentication system has been open for 10 seconds, and the user must wait for a 5 second lockout period to resume attempting authentication. The password Bob used is 4 digits in length, only digits 0 - 9 allowed. 2. (a) Calculate the total amount of time required for the attacker to guarantee to guess the password, including delays and actual guessing time (b) Bob eventually adjusted his authentication system to make it more difficult using hashing and other techniques, but then he realized that Malice has been capturing the hashed passwords sent from his laptop to the cloud server for authentication, to try to replay the hashes. i. Explain which basic external attacks Bob’s authentication system is vulnerable to and ... ii. how you will improve the system.
Please do not give solution in image format thanku The flow rate through a process is 0.5 flow units per minute. The number waiting for the process is 1. The time to do the activity in the process is 1 minute. This is a stable system. The average amount of time a flow unit spends waiting for the activity and doing the activity = ______. Enter one integer (which can be 0) and ONE decimal, so the answer looks like X.X. Any of the Xs can be a 0.
A machine can operate for an average of 10 weeks before it needs to be overhauled, a process which takes two days. The machine is operated five days a week. Compute the availability of this machine. (Hint: All times must be in the same units.)
Before completing production, a product must passthrough three stages of production. On the average, a newproduct begins at stage 1 every 6 minutes. The average timeit takes to process the product at each stage is as follows:stage 1, 3 minutes; stage 2, 2 minutes; stage 3, 1 minute.After finishing at stage 3, the product is inspected (assumethis takes no time). Ten percent of the final products arefound to have a defective part and must return to stage 1 andgo through the entire system again. After completing stage3, 20% of the final products are found to be defective. Theymust return to stage 2 and pass through 2 and 3 again. Onthe average, how many jobs are in the system? Assume thatall interarrival times and service times are exponential andthat each stage consists of a single server.
22. A system has two processes and three identical resources. Each process needs a maximum of two resources. Is deadlock possible? Explain your answer.
These are not graded questions as they are revision questions from my textbook
. A computer server experiences large fluctuations in the amount of data requests itreceives throughout the day. Because of this variation, Little’s Law does not apply. Trueor false?
The bottleneck resource in a process has the least idle time. True or false?a. Trueb. False

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