Do you dislike waiting in line? supermarket chain kroger has used computer simulation and information technology to reduce the average waiting time for customers at
Answers
There is a 0.9962 probability that a customer may have to wait longer than 2 minutes (120 seconds).
a. The applicable exponential probability distribution is:
f(z) = λe^(-λz), for z ≥ 0
where λ is the parameter for the distribution, and in this case, λ = 1/26, since the average waiting time is 26 seconds. Therefore, the probability density function of waiting time at Kroger is:
f(z) = (1/26)e^(-z/26), for z ≥ 0
b. To find the probability that a customer will have to wait between 15 and 30 seconds, we need to calculate the integral of the probability density function from 15 to 30:
P(15 ≤ Z ≤ 30) = ∫(15 to 30) [(1/26)e^(-z/26)] dz
Using integration by substitution, let u = z/26, then du = (1/26) dz, and the integral becomes:
P(15 ≤ Z ≤ 30) = ∫(15/26 to 30/26) e^(-u) du
Using a table of integrals or a calculator, we get:
P(15 ≤ Z ≤ 30) = e^(-15/26) - e^(-30/26) ≈ 0.0095
Therefore, the probability that a customer will have to wait between 15 and 30 seconds is approximately 0.0095.
c. To find the probability that a customer will have to wait more than 2 minutes (120 seconds), we need to calculate the integral of the probability density function from 120 to infinity:
P(Z > 120) = ∫(120 to infinity) [(1/26)e^(-z/26)] dz
Using integration by substitution, let u = z/26, then du = (1/26) dz, and the integral becomes:
P(Z > 120) = ∫(120/26 to infinity) e^(-u) du
Using a table of integrals or a calculator, we get:
P(Z > 120) = e^(-120/26) ≈ 0.9962
Therefore, the probability that a customer will have to wait more than 2 minutes (120 seconds) is approximately 0.9962.
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Correct question:
Do you dislike waiting in line? Supermarket chain Kroger has used computer simulation and information technology to reduce the average waiting time for customers at 2300 stores. Using a new system called QueVision, which allows Kroger to better predict when shoppers will be checking out, the company was able to decrease average customer waiting time to just 26 seconds (InformationWeek website and The Wall Street Journal website, January 5, 2015) a. Which of the exponential probability distribution is applicable and Show the probability density function of waiting time at Kroger.
a. f(z) = e-= e-26 for z 20
b. f(z) =-e e-x for x > 0
c. f(x)--e--=-e-26 for x < 0
d. f(x) =-e--=-e26 for x > 0 μ 26 26 26 26
b. What is the probability that a customer will have to wait between 15 and 30 seconds (to 4 decimals)? 0.0095
c. What is the probability that a customer will have to wait more than 2 minutes (to 4 decimals)? 0.9962
Related Questions
Mention 2 precautionary
measures to be observed
when using ICT tools
Answers
Answer:
ICT is the abbreviated form of Information and Communication. It included different technologies like mobile phones, computers, USBs etc.
Following are two precautionary measures which should be observed when using any kind of ICT:
Use of Antivirus: It can used to protect anything placed inside the technology especially from hacking and viruses which can create many issues.Backup Data: Creating a backup of the data stored in the device is important as it can be recalled when the device malfunctions. Backup of the data can be created through using USBs, CDs etc or through cloud storageYou are attempting to install software, but errors occur during the installation. How can System Configuration help with this problem
Answers
System Configuration is a powerful tool that can help with software installation errors. When you encounter errors during software installation, it may be due to conflicts with other programs or services that are running on your computer.
System Configuration allows you to disable unnecessary programs and services that may be causing conflicts, which can help you to complete the installation process successfully.To access System Configuration, simply type "msconfig" into the Windows search bar and press Enter. Once open, you can navigate to the Services and Startup tabs to review and disable any programs or services that are not required for the installation process. Disabling these programs and services can help to free up system resources and reduce the likelihood of conflicts during installation.In addition to disabling unnecessary programs and services, you may also want to check for any available updates to the software or to your operating system. Installing updates can help to resolve known issues and improve compatibility with other programs.In summary, System Configuration can be a valuable tool when encountering errors during software installation. By disabling unnecessary programs and services and installing updates, you can help to reduce conflicts and successfully complete the installation process.For such more question on installation
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comple with correct answer
Answers
Simply select cell H2, click on the tiny square in its lower-right corner, and drag it down to cell H7 to duplicate the formula in cell H2 in the range H3:H7.
How can a formula from one cell be copied to a group of cells?To fill a formula, first pick the cell containing the formula, then select the cells below it, and then hit Ctrl+D. To fill the formula to the right in a row, hit Ctrl+R as well.
If you duplicate a formula What will Excel do when the formula is copied to a new cell?Using the mouse, select the formula in the cell, and then hit Ctrl + C to copy it.
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What happens when the electrons flowing through the light bulb change direction?
Answers
Answer:
Electrons move through the wires is the opposite direction.
Explanation:
The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.
Conceptual data modeling is typically done in parallel with other requirements analysis and structuring steps during:
A. systems planning and selection.
B. systems design.
C. systems analysis.
D. systems implementation and operation.
E. systems evaluation.
Answers
Conceptual data modeling is typically done in parallel with other requirements analysis and structuring steps during systems analysis i.e., Option C is the correct answer.
Systems analysis is the phase of the system development life cycle where the requirements for the new system are gathered, analyzed, and documented. During this phase, the current business processes are studied, and the system requirements are identified. The objective of systems analysis is to understand the existing system and identify the requirements for the new system.
Conceptual data modeling is a technique used to represent the information requirements of an organization in a graphical form. It is a high-level representation of the data requirements of an organization that identifies the entities, attributes, and relationships between entities. Conceptual data modeling is an important step in developing a database system as it provides a foundation for understanding the data requirements of the system.
During systems analysis, requirements are gathered, and the information requirements of the organization are identified. Conceptual data modeling is done in parallel with other requirements analysis and structuring steps to ensure that the data requirements of the organization are adequately captured. By creating a conceptual data model during systems analysis, the organization can ensure that the data requirements of the system are understood and can be used to guide the design and implementation of the system.
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If a change is made to the active
cell, what type of cell will also
change?
Precedents
Dependents
Answers
Answer:
precedents
Explanation:
excel conditional formatting based on another cell
Answers
Choose the cells to which conditional formatting should be applied. Drag from the first cell of the range to the last cell. By choosing HOME > Conditional Formatting > Highlight Cells Rules, choose Text that Contains.
Can you colour a cell using an if statement?Before assigning your rule, use "Ctrl-A" to apply an If-Then rule to all cells. When values from coloured cells are copied and pasted into uncolored cells, the uncolored cells take on the colour of the copied cell.
How can I have Excel automatically match the colour of one cell to another cell?Select Format - Conditional Formatting from the menu. Select Formula Is from the Conditional Formatting box. Select Format from the menu.
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In your opinion, how can communication be affected by media and information?
Answers
Communication and information are fundamental aspects of modern society. The media play an important role in the way people receive and process information.
The media can play an important role in educating and raising awareness in society about important issues, such as human rights, gender equality and environmental protection.
Furthermore, the media can serve as a platform for people to share information and communicate with a wider audience, which can contribute to a more meaningful and constructive dialogue in society.
In conclusion, the media and information have a significant impact on the way people communicate and relate to each other.
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You want to build yourself a house. The building company you hired can on y build houses with sides from their specific set s. That means they can build you a square house or a rectangular one but if and only if its length and width belong to the set s. This month, they have a special promotion: they will paint the ceiling Of a new house for free. But only if its area is not more than a. You want them to do it for free but you also want to be sure that the house will be comfortable and not too small.
Required:
How many possible house configurations can you create to have the ceiling painted for free given the side lengths offered?
Answers
The total number of home designs that could have their ceilings painted without charge is thus: for each of the m unique side lengths in the collection s, m + m2.
How to explain the configurationSay there are m different side lengths in the set s. Then, using each of the m side lengths, we may build a square, giving us m possible square homes. Additionally, by choosing two side lengths from the set s (with replacement) and using them as the length and width of the rectangle, we can create m2 feasible rectangular buildings.
We must compute their areas and contrast them with the largest area, a. The house configuration is valid and the ceiling can be painted for free if the area is less than or equal to a.
The total number of home designs that could have their ceilings painted without charge is thus:
for each of the m unique side lengths in the collection s, m + m2.
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How are programs and algorithms related? A program is a part of an algorithm. They are not connected at all. An algorithm is a part of a program. They are the same.
Answers
Answer:
A program is a set of instructions that a computer executes.
An algorithm is a set of instructions that must be done in order to get some result.
If an algorithm is written in a programming language, then the program is an implementation of the algorithm.
An algorithm must not, however, be a program. An algorithm can also be performed manually (e.g. calculate 6431 + 8316 on paper or in your head).
Explanation:
Will mark BRAINLIST only if correct answer
Please need help ASAP only answer if u know the correct answer without plagiarism please (plus 15 points!)
Q1.illustrate the ways to creat human design with good impact to others. (5 ways at least)
Q2.( in the pic)
Answers
Answer:
Yes, because it adds meaning to Sam life by providing him ways to calm himself and sooth his mind and also helps him deal with stress in his life
The ___________________________ was enacted in 1986 was first designed to protect government operated computers, but the statute has broadly expanded to prosecute anyone accused of illegally accessing government, personal or business computer many reasons.
Answers
Answer: Computer Fraud and Abuse Act (CFAA)
Explanation:
How would you design an adaptive environment for people who are blind?
Answers
Answer:
I would make more things accessible to blind people. Such as having more binding stuff everywhere for the blind people to trace their finger over so they know what their reading. I would also find people to assist blind people so they don't run into things.
the correct order of steps in manual film processing is a. develop, rinse, fix, wash. b. fix, wash, rinse, wash. c. rinse, develop, fix, wash. d. fix, rinse, develop, wash.
Answers
c. rinse, develop, fix, wash is the correct order of steps in manual film processing.
What is a film processing?
As was previously noted, radiographic film is made up of an emulsion that is coated on both sides of a translucent, blue-tinted substrate. Gelatin that contains small, radiation-sensitive silver halide crystals, like silver bromide and silver chloride, makes up the emulsion. Some Br- ions are released and caught by the Ag+ ions when x-rays, gamma rays, or light rays hit the crystals or grains. Because the change in the grains is essentially imperceptible in this situation, but the exposed grains are now more sensitive to reaction with the developer, the radiograph is said to contain a latent (hidden) image.
There are five fundamental phases in film processing, whether it be human or automatic: developing, rinsing or stopping the bath, fixing, washing, and drying are the first five steps.
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The terminology used to describe a possible path to resolution to a problem from one end to the other is called what?
Answers
The terminology used to describe a possible path to a resolution to a problem from one end to the other is called a solution.
What is terminology?The research of these phrases and related applications is known as terminology science. A glossary is a collection of specialist words plus their corresponding interpretations in a given field.
If there is a body or a term which is the need to have a resolution that needs to be made through that the person can evaluate and find a solution for the following situation then that is called a resolution or solution for that particular problem
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what is the difference between list and array with examples
Answers
List is utilized to gather things that as a rule comprise of components of different data types. An array is additionally a imperative component that collects a few things of the same information sort. List cannot oversee number-crunching operations. array can oversee math operations.
What is the difference between list and array?In programming, a list and an cluster are two information structures used to store and control collections of values. The most contrast between them is the way they store and get to the information.
So, A list is an requested collection of things, and each thing can be of a distinctive information sort. Array: An cluster is additionally an requested collection of items, but all things must be of the same information sort.
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A company uses cell phones that do not have SIM cards and can only be managed by a specific
network provider. The company wants to buy 3G cell phones that have SIM cards so they can switch to
any chosen provider. What network type best suits the company's needs?
A. GSM
B. CDMA
C. PRL
D. LTE
Answers
Based on the company's requirement to switch to any chosen network provider, the network type that best suits their needs is GSM (Global System for Mobile Communications).
GSM is a widely adopted standard for mobile communication and is used by the majority of the world's cellular networks. One of the key advantages of GSM is its use of SIM cards (Subscriber Identity Module). SIM cards allow users to easily switch between different network providers by simply swapping out the SIM card in their device. This flexibility provides the company with the freedom to choose the network provider that offers the best coverage, pricing, and services for their specific needs.
On the other hand, CDMA (Code Division Multiple Access) is another network technology used in cellular communication. Unlike GSM, CDMA does not utilize SIM cards. CDMA phones are typically tied to specific network providers and do not offer the same level of flexibility when it comes to switching between providers. Therefore, CDMA is not the best network type for the company's requirement to have the ability to switch to any chosen provider.
PRL (Preferred Roaming List) is not a network type but rather a list that CDMA phones use to prioritize which networks to connect to when roaming. It is not directly relevant to the company's requirement.
LTE (Long-Term Evolution) is a 4G wireless communication standard that provides high-speed data transmission. While LTE is an advanced network technology, it does not specifically address the company's need for flexibility in switching network providers.
In summary, the network type that best suits the company's needs for switching to any chosen provider is GSM.
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which access control component, implementation, or protocol controls who is permitted to access a network?
Answers
A series of rules known as an access control list (ACL) defines which people or systems are allowed or denied access to a specific object or system resource.
Additionally, access control lists are implemented in switches and routers, where they serve as filters to govern which traffic is allowed access to the network. A security attribute on each system resource identifies the access control list for that resource. Every person who has access to the system has a place on the list. The most typical privileges for a file system ACL include the capacity to read a file or all the files in a directory, to write to the file or files, and, if the file is an executable file or program, to run it.
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What does every shot have with regards to depth?
Answers
This can be used to capture a larger area of acceptably sharp images. This can also be referred to as a deep depth of field, and some cinematographers will simply use the term “depth” to describe shots with a large DOF. It can also be referred to as deep focus.
Write an LMC program as follows instructions:
A) User to input a number (n)
B) Already store a number 113
C) Output number 113 in n times such as n=2, show 113
113.
D) add a comment with a details exp
Answers
The LMC program takes an input number (n) from the user, stores the number 113 in memory, and then outputs the number 113 n times.
The LMC program can be written as follows:
sql
Copy code
INP
STA 113
INP
LDA 113
OUT
SUB ONE
BRP LOOP
HLT
ONE DAT 1
Explanation:
A) The "INP" instruction is used to take input from the user and store it in the accumulator.
B) The "STA" instruction is used to store the number 113 in memory location 113.
C) The "INP" instruction is used to take input from the user again.
D) The "LDA" instruction loads the value from memory location 113 into the accumulator.
E) The "OUT" instruction outputs the value in the accumulator.
F) The "SUB" instruction subtracts 1 from the value in the accumulator.
G) The "BRP" instruction branches back to the "LOOP" label if the result of the subtraction is positive or zero.
H) The "HLT" instruction halts the program.
I) The "ONE" instruction defines a data value of 1.
The LMC program takes an input number (n) from the user, stores the number 113 in memory, and then outputs the number 113 n times.
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Why is it important to use meaningful names for the functions in your library?.
Answers
Why is it important to use meaningful names for the functions in your library?
Answer: ✍️It is important to give functions in libraries meaningful names so that other people who may want to use the library can understand and remember, at least roughly, what each function does.
ANSWERED BY: ItzMeJane ✨✨✨which of the following do not have a definite shape but take the shape of the container into which they are put? a. water and paper b. water and fine sand c. fine sand and paper d. ice cubes and water
Answers
Answer:
BASICALYL JUSTDO PAPER A
Explanation:
we can reduce the margin of error in an interval estimate of p by doing any of the following except _____.
Answers
We can reduce the margin of error in an interval estimate of p by doing any of the aforementioned except using a planning value closer to 0.5. Therefore, the correct answer option is: B) using a planning value closer to 0.5.
What is a confidence interval?In Mathematics and Statistics, a confidence interval is also referred to as level of confidence and it can be defined as a range of estimated values that defines the probability that a population parameter would fall or lie within it.
What is the margin of error?In Mathematics, the margin of error (MOE) can be defined as a measure of the difference that exist between an observed value and a true value of the population parameter.
This ultimately implies that, the margin of error (MOE) can be used to determine the confidence interval. Additionally, the margin of error (MOE) can be reduced in a confidence interval estimate of p by increasing the sample size or the level of significance.
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Complete Question:
We can reduce the margin of error in an interval estimate of p by doing any of the following except _____.
A) increasing the sample size.
B) using a planning value closer to 0.5.
C) increasing the level of significance.
D) reducing the confidence coefficient.
How to set encapsulation angular component.
Answers
Answer: anyone know?
Explanation:
Which of the following is not a data cleansing activity? Multiple Choice Identifies redundant records Identifies inaccurate or incomplete data Identifies missing records or attributes Identifies sales trends
Answers
Identifying sales trends is not a data cleansing activity. Data cleansing activities primarily involve rectifying data issues, while identifying sales trends falls under the realm of data analysis for business insights.
Data cleansing refers to the process of identifying and correcting or removing errors, inconsistencies, and inaccuracies in a dataset. It aims to improve data quality and ensure reliable and accurate information for analysis and decision-making. The provided options consist of activities that are typically part of data cleansing, except for identifying sales trends.
Identifying redundant records involves identifying and eliminating duplicate entries in a dataset, ensuring that each record is unique. Identifying inaccurate or incomplete data entails identifying and correcting data that is incorrect or lacks necessary information. Identifying missing records or attributes involves identifying gaps in the dataset where certain records or essential attributes are absent. These activities contribute to enhancing the quality and completeness of the data.
On the other hand, identifying sales trends falls under the domain of data analysis rather than data cleansing. Sales trends analysis involves examining historical sales data to identify patterns, fluctuations, and insights related to sales performance over time. While it is valuable for business intelligence and decision-making, it focuses on interpreting and understanding data rather than cleansing or improving its quality.
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Read the following scenario, and then decide if you should upgrade the computer. You have a desktop that you use primarily for writing essays for school and browsing the web at home. The computer is slowing down some, so you check the date on it. Your computer is 6 years old. It is amazing that it lasted this long. You probably need a better CPU and more RAM. What should you do?
Answers
Answer:
Upgrade
Explanation:
EDGE 2021
Answer:
B. Upgrade
Explanation:
Because you have a desktop, upgrading the CPU and RAM are an easy and inexpensive fix. Upgrading a laptop is more difficult and often requires purchasing a new computer.
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Have a nice day everyone<3
list 20 specific purpose of application software
Answers
Answer:
1. Word processing
2. Spreadsheet creation and analysis
3. Database management
4. Presentation creation and delivery
5. Graphic design and editing
6. Video editing
7. Music production
8. Web browsing
9. Email management
10. Project management
11. Time tracking and monitoring
12. Accounting and financial management
13. Inventory and supply chain management
14. Human resources management
15. Customer relationship management
16. Sales management
17. Marketing management
18. Education and training
19. Healthcare management
20. Scientific research and analysis
4. ¿Qué son los actuadores? ¿ Y cuál es su función?
5.- Menciona 3 actuadores que veas habitualmente y explica su función.
6. ¿Cuáles son los sensores de las personas ?
7. ¿Cuáles son los efectores o actuadores de las personas?
Answers
Could you write that in English? Then I can help you.
For Questions 1-4, consider the following code:
def mult(x):
return x * 2
def add(x, y = 5):
return x + y
#MAIN
n= int(input("Enter a number:"))
print (mult (n -1) + add(n))
What is output when the user enters -7?
Answers
The output when the user enters -7 as the input would be:
css
Enter a number:-7
-13
What is the coding about?Below is how the code works:
The user is prompted to enter a number, which is stored as the variable n.The mult function is called with n - 1 as its argument, and returns 2 * (n - 1).The add function is called with n as its argument, and returns n + 5.Finally, the result of mult (n -1) + add(n) is calculated, which is equal to 2 * (n - 1) + n + 5.This expression is then printed as the final output.Therefore, Given the input value of -7, the output would be 2 * (-7 - 1) + (-7) + 5 = -13.
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Microsoft sql server is a ________ for large mainframes and midrange computers.
Answers
The server is a rational DBMS for large mainframes and midrange computers.
What is SQL?Structured Query Language is the official name of SQL.
SQL is the most used language for communicating with relational databases. SQL can be used to create, find, edit, and delete database records. SQL can also be used for a wide range of auxiliary activities, including database maintenance and optimization.
Some important uses of SQL are :
It facilitates user access to data stored in the RDBMS system.It aids in data description.Not only that, but it enables you to specify and manipulate a database's specific data.You may build and modify databases and tables using SQL.Hence, SQL server is a rational Data base management system for large mainframes and midrange computers.
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