Concept explainers
Explanation of Solution
a.
The fraction of all refrigerators we have to replace is obtained using [(l – Q)-1 * R] matrix...
Explanation of Solution
b.
If company continues with the current policy Freezco's annual sale is 10000 refrigerators. Thus, fraction of refrigerators to be replaced is shown below:
0.143 x 10000 = 1430 refrigerators
Cost to replace 1 refrigerator is $500. Thus, cost to replace 1430 refrigerators annually is as follows:
Cost1 = 1430 x 500
= $715000 …(1)
On suggestion to change the replacement policy from 3 to 2 years, his markov chain transition probability matrix is modified accordingly. The changed matrix is given below.
Other matrices also get updated accordingly. Here he states 1, 2, are the transient states and >2, fail are absorbing states. The matrix Q consists of all transient states and R consists of transient to absorbing states. The probability matrix Q comprising of all the transient states is given below.
Here, l is 2 x 2 identity matrix.
The matrix (l – Q) is given below:
Using the excel function MINVERSE (), we can obtain (l – Q)-1 matrix. The function returns the inverse matrix for the matrix stored in an array. Note that the MINVERSE function must be entered with CONTROL + SHIFT + ENTER because it is an array function. The matrix (l – Q)-1 is given below.
The R matrix consists of transient to absorbing states. The Matrix R is given below...
Trending nowThis is a popular solution!
Chapter 17 Solutions
Operations Research : Applications and Algorithms
- BU School of Witchcraft and Wizardry is a school of magic that sends admission letters only to children with magical abilities. The admissions process for BU School of Witchcraft and Wizardry is as follows:- If both parents of the child have previously studied at BU, they do not need to reply to the admission letter. Otherwise they need to reply to the admissions letter by July 31. If they do not reply by the specified date, they are not accepted to the school. BU has 4 houses that students are sorted into by the sorting hat “Hayri”. These houses are; Gryffindor, Hufflepuff, Ravenclaw and Slytherin. Hayri sorts the students into houses according to 2 characteristics; braveness and intelligence.- If Hayri finds the student to be brave and intelligent, they are sorted into Gryffindor.- If the student is found to only be brave, they are sorted into Slytherin.- If the student is found to only be intelligent, they are sorted into Ravenclaw.- Finally, if they are neither brave nor…arrow_forwardEvery campus has full time students who attend classes between 8h00 and 17h00 during theweek. Every campus also has part time students who attend classes between 18h00 and 21h00 onweekdays. In the scenario provided at the beginning of Q.1.1, it is stated that no student shouldbe allowed to access the campus after 12h00. The campus has decided to change this rule to state“no full-time student will be allowed to access the campus after 12h00. Part time students canaccess the campus as from 17h00arrow_forwardEvery campus has full time students who attend classes between 8h00 and 17h00 during theweek. Every campus also has part time students who attend classes between 18h00 and 21h00 onweekdays. In the scenario provided at the beginning of Q.1.1, it is stated that no student shouldbe allowed to access the campus after 12h00. The campus has decided to change this rule to state“no full-time student will be allowed to access the campus after 12h00. Part time students canaccess the campus as from 17h00”. By making use of a class diagram, demonstrate how the concept of inheritancecan be used to represent the scenario provided at the beginning of thisquestion. Marks will be awarded as follow:Q.2.1.1 Class diagram showing inheritance; Q.2.1.2 diagram for Attributes; Q.2.1.3 diagram for Instance methods; Q.2.1.4 diagram for Access specifiers.arrow_forward
- Every campus has full time students who attend classes between 8h00 and 17h00 during theweek. Every campus also has part time students who attend classes between 18h00 and 21h00 onweekdays. In the scenario provided at the beginning of Q.1.1, it is stated that no student shouldbe allowed to access the campus after 12h00. The campus has decided to change this rule to state“no full-time student will be allowed to access the campus after 12h00. Part time students canaccess the campus as from 17h00 By making use of a class diagram, demonstrate how the concept of inheritancecan be used to represent the scenario provided at the beginning of thisquestion. Marks will be awarded as follow:Q.2.1.1 Class diagram showing inheritance; (8)Q.2.1.2 Attributes; (4)Q.2.1.3 Instance methods; (12)Q.2.1.4 Access specifiers. (2)Q.2.2 By means of pseudocode, demonstrate how overloaded methods can be usedin the COVID-19 application you are designingarrow_forwardEvery campus has full time students who attend classes between 8h00 and 17h00 during theweek. Every campus also has part time students who attend classes between 18h00 and 21h00 onweekdays. In the scenario provided at the beginning of Q.1.1, it is stated that no student shouldbe allowed to access the campus after 12h00. The campus has decided to change this rule to state“no full-time student will be allowed to access the campus after 12h00. Part time students canaccess the campus as from 17h00”. By making use of a class diagram, demonstrate how the concept of inheritancecan be used to represent the scenario provided at the beginning of thisquestion. Marks will be awarded as follow:Class diagram showing inheritance;Attributes; Instance methods; Access specifiers By means of pseudocode, demonstrate how overloaded methods can be usedin the COVID-19 application you are designingarrow_forwardEvery campus has full time students who attend classes between 8h00 and 17h00 during theweek. Every campus also has part time students who attend classes between 18h00 and 21h00 onweekdays. In the scenario provided at the beginning of Q.1.1, it is stated that no student shouldbe allowed to access the campus after 12h00. The campus has decided to change this rule to state“no full-time student will be allowed to access the campus after 12h00. Part time students canaccess the campus as from 17h00 By making use of a class diagram, demonstrate how the concept of inheritancecan be used to represent the scenario provided at the beginning of thisquestion. Marks will be awarded as follow: Class diagram showing inheritance; Attributes; Instance methods; Access specifiersarrow_forward
- Amarillo Video Store is planning a promotional give-away for its long-standing customers. If the customer has been a member for 18 months or more he/she will receive a coupon booklet allowing him/her to hire 4 movies for free. If during that same 18 months he/she has hired at least 12 videos, he/she will receive an additional 3 free movie hire vouchers. If the customer’s membership is less than 18 months and he/she has hired at least 12 videos then he/she will receive 2 free movie hire vouchers. All members will receive a Thank You letter and “Yentia Obiaa” music video. Construct a Decision Tree for the above scenario.arrow_forwardAn analyst investigating University Student course registration system has found registration department applies the following rules: Student affairs department checks all applications for course registrations received by the campus. Student affairs first checks the pre requisite of the selected courses for each application and adds that credit to the student's fee balance. If the credit hour exceeds the limit defined for that program, student's application is rejected and is intimated to reselect the courses as per defined limit of credit hours. All such students who have selected the courses according to university policy their fee voucher is generated and that the fee voucher has been passed to the accounts manager who will contact them in the next three days. After the payment of fee, confirmation is to be sent by accounts manager through SMS. In case fee voucher is generated and is not collected by the student reminder message is sent reminding the student of the payment of fees.…arrow_forwardEvery campus has full time students who attend classes between 8h00 and 17h00 during the week. Every campus also has part time students who attend classes between 18h00 and 21h00 on weekdays. In the scenario provided at the beginning of Q.1.1, it is stated that no student should be allowed to access the campus after 12h00. The campus has decided to change this rule to state “no full-time student will be allowed to access the campus after 12h00. Part time students can access the campus as from 17h00”.20; 21 2021© The Independent Institute of Education (Pty) Ltd 2021Page 4 of 4Q.2.1 By making use of a class diagram, demonstrate how the concept of inheritance can be used to represent the scenario provided at the beginning of this question. Marks will be awarded as follow:Q.2.1.1 Class diagram showing inheritance; (8)Q.2.1.2 Attributes; (4)Q.2.1.3 Instance methods; (12)Q.2.1.4 Access specifiers. (2)Q.2.2 By means of pseudocode, demonstrate how overloaded methods can be used in the COVID-19…arrow_forward
- Every campus has full time students who attend classes between 8h00 and 17h00 during the week. Every campus also has part time students who attend classes between 18h00 and 21h00 on weekdays. In the scenario provided at the beginning of Q.1.1, it is stated that no student should be allowed to access the campus after 12h00. The campus has decided to change this rule to state “no full-time student will be allowed to access the campus after 12h00. Part time students can access the campus as from 17h00”.Q.2.1 By making use of a class diagram, demonstrate how the concept of inheritance can be used to represent the scenario provided at the beginning of this question. Marks will be awarded as follow:Q.2.1.1 Class diagram showing inheritance; Q.2.1.2 Attributes; Q.2.1.3 Instance methods; Q.2.1.4 Access specifiers.arrow_forwardEvery campus has full time students who attend classes between 8h00 and 17h00 during the week. Every campus also has part time students who attend classes between 18h00 and 21h00 on weekdays. In the scenario provided at the beginning of Q.1.1, it is stated that no student should be allowed to access the campus after 12h00. The campus has decided to change this rule to state “no full-time student will be allowed to access the campus after 12h00. Part time students can access the campus as from 17h00”. By making use of a class diagram, demonstrate how the concept of inheritance can be used to represent the scenario provided at the beginning of this question.Q.2.1.1 Class diagram showing inheritanceQ.2.1.2 AttributesQ.2.1.3 Instance methodsQ.2.1.4 Access specifiers.arrow_forwardEvery campus has full time students who attend classes between 8h00 and 17h00 during the week. Every campus also has part time students who attend classes between 18h00 and 21h00 on weekdays. In the scenario provided at the beginning of Q.1.1, it is stated that no student should be allowed to access the campus after 12h00. The campus has decided to change this rule to state “no full-time student will be allowed to access the campus after 12h00. Part time students can access the campus as from 17h00”. Q.2.1 By making use of a class diagram, demonstrate how the concept of inheritance can be used to represent the scenario provided at the beginning of this question. Marks will be awarded as follow:Q.2.1.1 Class diagram showing inheritance; Q.2.1.2 Attributes; Q.2.1.3 Instance methods; Q.2.1.4 Access specifiers. Q.2.2 By means of pseudocode, demonstrate how overloaded methods can be used in the COVID-19 application you are designing.arrow_forward
- Operations Research : Applications and AlgorithmsComputer ScienceISBN:9780534380588Author:Wayne L. WinstonPublisher:Brooks Cole