1) Consider the following interarrival and service times for the first 5 customers to a single server queuing system. Customer Number Interarrival Time (min) Service Time (min) 1 3 4 2 1 3 3 4 4 2 3 5 1 For the above table, the first customer arrives at t = 0. The interarrival time between customer 1 and 2 is 3 minutes, and the interarrival time between customer 2 and 3 is 1 minute. Suppose the simulation ends at t= 16 minutes. Based on the above information, compute the following (show the intermediate steps): 1. The average number of people in queue; 2. The average waiting time in system (time in queue + time in service); 3. The server utilization.

1) Consider the following interarrival and service times for the first 5 customers to a single server queuing system. Customer Number Interarrival Time (min) Service Time (min) 1 3 4 2 1 3 3 4 4 2 3 5 1 For the above table, the first customer arrives at t = 0. The interarrival time between customer 1 and 2 is 3 minutes, and the interarrival time between customer 2 and 3 is 1 minute. Suppose the simulation ends at t= 16 minutes. Based on the above information, compute the following (show the intermediate steps): 1. The average number of people in queue; 2. The average waiting time in system (time in queue + time in service); 3. The server utilization.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

a) Complete the table b)Probability that a customer has to wait in the queue c) Average time between arrivals
The library uses a library management system (LMS) through which 10 books can be issued to its employees per day. To keep track of each book, there is a function that gets the details such as title, faculty name, date of borrowing, and the duration required. The issue) function determines whether the books requested should be granted or not based on the value (cost), year of publication, and the number of books being requested if the book costs more than Rs 1000 or is published in the current year, or if the book count is one, then the book is to be issued for no more than two days. Also, the LMS keeps track of the top 5 books in the library to determine which book is more valuable than another. Your task is to create a LMS based on the above scenario by creating a structure and implementing the functions required (Not Use pointers to the defined structure).
Consider an educational institute (i.e., school, university etc.), draw a business process model for any of their processes (i.e., accounts, timetable/ date sheet creation and distribution, student’s registration etc.) by focusing on following factors: correct business process modeling notations use proper gateways in model at least 2 pools with few lanes show some message flow between pools
In a call centre what is automated outbound calling a. Its call over flow distribution to another part of the call centre b. The system calls automatically when the call centre executive is free c. The executive calls all abandoned calls from the list provided d. The system calls automatically and keeps the customer waiting before the executive can attend to the call
Please give me correct solution.
Using C. This question deals with processing the semi-annual sales for a drug store. The drug storesells four types of items, namely Cosmetics, Drugs, Stationery, and Confectionery. You havebeen presented with the following set of data which shows sales for the January to June periodfor the various item types. Item Type January February March April May June Cosmetics 8723.19 7397.21 5982.15 8319.54 7298.31 7490.02 Drugs 9384.12 9740.98 8940.34 8876.34 7093.23 9830.11 Stationery 938.25 834.98 976.29 994.56 912.05 849.12 Confectionery 1832.65 972.34 983.65 1289.28 1197.30 989.41 Your job is to develop a program which accepts as inputs the above sales figures and whichdetermines the total sales for the six month period in each category as well as average monthlysales in each category. In addition, your program should also determine the total sales for eachmonth. Your program should produce as output a report with the following format:
Q3 Measurements on call-failures in a Telephone Central Office (TCO) compiled over eight bimonthly data, i = 1, 2, ..., 6 indicate random values (RVS) with corresponding frequency of occurrence (n.). Relevant assessments done at two independent sites of TCO X and TCO Y and pertinent details are listed below. (The percentage values (Cx and Cy) shown are measures off- sets of call-failures with respect to a reference of zero value) Bimonthly Index TCO X Cx, % n TCO Y Determine the following: i=1 i-2 i-3 SA 81 Answer (Check!) 2.5 6.4 33 12 (7.26, 22.92): (5.68, (6.29, 38.35) 8.25) i-4-5 i-6 li=7 i=8 3.4 75 7.8 134 5.9 Cy, % 19 EIP 18 30 2.5 21 16 8 10 17 43 32 23 17 22 19 Hint: The associated RV refers to: (Percentage of call-failures (Cx or Cy) x n/100) - Actual number of call-failures iii iv (4.82-3.92, (+ 2.456, 8.19)-4.12) +1.998) 42 8.7 48 19 (v) Skewness of central tendency of the RV in terms of relevant Pearson coefficient 147 (i) Expected average and variance of the RV in each…
How many traces does figure 2 have?
An industrial gas supplier every day supplies gas to its local manufacturing companies. On a particular day, the company has received following orders from 6 companies that they need to fulfill using their fleet of tankers each with a capacity of 100 units. Node 1 Node 2 Node 3 Node 4 Node 5 Node 6 Demand (Units) 40 Table below gives the distances (in Miles) between the companies central depot (Node 0) and the six customers (Node1, Node 2.....Node 6). Node 0 Node 1 Node 2 30 40 27 Node 0 Node 1 Node 2 Node 3 Node 4 Node 5 Node 6 30 40 37 52 60 31 45 27 21 29 26 20 20 38 20 30 32 10 Node 3 Node 4 Node 5 37 52 29 20 30 21 38 30 27 42 30 26 28 60 26 30 27 26 40 39 Node 6 31 20 32 42 28 39 (a) Use the sequential version of Savings algorithm to develop vehicle route that minimizes total distance travelled. (b) Use the parallel version of Savings algorithm to develop vehicle route that minimizes total distance travelled. How does this solution compare to one obtained in part (a)? Which one…
i need solution of Part 1 2 and 3
Given the following two tasks in a soft real-time system T1 (T-2, E-1) T2 (T-5, E-3) A Is the system schedulable under Earliest Deadline First (EDF) scheduler? (enter Yes or No) B. At time 0, what is the absolute deadline of T1 and T2 respectively? (enter numerical answer only) C.At time 2, what is the absolute deadline of T1 and T2 respectively? (enter numerical answer only) D. At time 4, what is the absolute deadline of T1 and T2 respectively? (enter numerical answer only) E. At time 8, what is the absolute deadline of T1 and T2 respectively? (enter numerical answer only) FHthe system is not schedulable, what is the failure rate of T1 and T2 respectively? (enter numerical percentage value without any letters or symbols) G. If Rate Monotice Scheduler is used, what would be the failure rate of T2? (enter numerical percentage value without any letters or symbols)
Please study the following Activity on Network Diagram and answer the questions below: Calculate all the free floats.