Task
Instructions
1. Summative Assessment 2 (SA 2) must be submitted online on or before the 29th of November 2021.
2. The essay must be a minimum of 600 (six hundred) words, and should not exceed 750 (seven hundred and fifty) words.
3. The essay structure must be as follows:
Cover Page...
The data in the file contains the total earnings of the employees of city of Boston.
Show the histogram of the employee earnings. Use breaks from 40000 to 400000 in steps of 20000 and show the corresponding tick labels on the x-axis. Compute the mean and standard deviation of this data. What do you infer from the shape of the histogram?
Draw 5000 samples of this data of size 10, show the histogram of the sample means. Compute the mean of the sample means and the standard deviation of the sample means. Set the start seed for random numbers as the last 4 digits of your BU id.
Draw 5000 samples of this data of size 40, show the histogram of the sample means. Compute the mean of the sample means and the standard deviation of the sample means. Set the start seed for random numbers as the last 4 digits of your BU id.
Compare of means and standard deviations of the above three distributions.
Part2) Central Limit Theorem – Negative Binomial distribution
Suppose the input data follows the negative binomial distribution with the parameters size = 3 and prob = 0.5. Set the start seed for random numbers as the last 4 digits of your BU id.
Generate 5000 random values from this distribution. Show the barplot with the proportions of the distinct values of this distribution.
With samples sizes of 10, 20, 30, and 40, draw 1000 samples from the data generated in a). Use sample() function with replace as FALSE. Show the histograms of the densities of the sample means. Use a 2 x 2 layout.
Compare of means and standard deviations of the data from a) with the four sequences generated in b).
Part3) Sampling
Create a subset of the dataset from Part1 with only the top 5 departments based on the number of employees working in that department. The top 5 departments should be computed using R code. Then, use %in% operator to create the required subset.
Use a sample size of 50 for each of the following.
Set the start seed for random numbers as the last 4 digits of your BU id.
Show the sample drawn using simple random sampling without replacement. Show the frequencies for the selected departments. Show the percentages of these with respect to sample size.
Show the sample drawn using systematic sampling. Show the frequencies for the selected departments. Show the percentages of these with respect to sample size.
Calculate the inclusion probabilities using the Earnings Using these values, show the sample drawn using systematic sampling with unequal probabilities. Show the frequencies for the selected departments. Show the percentages of these with respect to sample size.
Order the data using the Department Draw a stratified sample using proportional sizes based on the Department variable. Show the frequencies for the selected departments. Show the percentages of these with respect to sample size.
Compare the means of Earningsvariable for these four samples against the mean for the data.
People also searched
An assignment paper should include the following elements:
What is Equal Employment Opportunities?
The Key Fundamentals of HR management in an organisation
Strategies for selecting the best human resources
What is strategic HR management and planning?
Elaborate on the concepts of workers, job and job analysis in human resource
What is Equal Employment Opportunities?
The Key Fundamentals of HR management in an organisation
Strategies for selecting the best human resources
What is strategic HR management and planning?
Elaborate on the concepts of workers, job and job analysis in human resource
The steps for writing an assignment are:
What is Equal Employment Opportunities?
The Key Fundamentals of HR management in an organisation
Strategies for selecting the best human resources
What is strategic HR management and planning?
Elaborate on the concepts of workers, job and job analysis in human resource
The best and easiest way to get error-free assignments is by contacting us. We have handpicked some of the most eminent subject matter experts who will guide you throughout the assignment writing journey. We even proofread the document for you without asking for extra charges.
Questions:
1) One of the greatest feats in the history of Summer Olympics was Bob Beamon's world record long jump in 1968 in Mexico City. It is fitting that Bob Beamon was one of the first individuals inducted into the United States Olympic Hall of Fame; his jump was an extraordinary accompli...
Task
Instructions
1. Summative Assessment 2 (SA 2) must be submitted online on or before the day of the Summative Assessment 1 (SA 1) sitting.
2. The essay must be a minimum of five hundred (500) words and should not exceed six hundred and fifty (650) words.
3. The essay structure must be as f...
Answer:
The brain of human beings is considered to be the most powerful weapon in existence ever since the dawn of human civilization (Janks, Hilary). No matter how advances and lethal the innovations get with the progress of time, they are simply the manifestations of the ideas and concepts gene...
Answer:
Topic: Language Development in Deaf Children
Part 1: Introduction
The presence of hearing impairment has a negative effect on the development of a child’s speech. The aftermath of this is the delay in the child’s acquisition of social, linguistic, sensory and academic ...
Answer
Cognitive Developmental Theory
Introduction
Development in humans across their life span takes place in all stages of life starting from birth until death and the types of development vary. Human beings develop biologically, physically, emotionally and psychologically (Dacey, Travers &am...
Questions:
The Declaration of Independence is a famous and revered document that most people think of when speaking about early American History and culture. The original engrossed (handwritten) declaration is currently displayed at the National Archives in Washington DC Famous men, who defied a ki...
Task:
Scenario I: Courts and Alternative Dispute Resolution
Alana Mendes suffered from Alzheimer’s, and was admitted to the Bay Pines Rehabilitation Center. Because of her mental condition, Alana’s daughter, Juanita, completed the admissions paperwork and signed the admissions agreement. The a...
Résumé Regrets Human resource (HR) managers say that 53 percent of résumés and job applications contain falsification, and 21 percent of résumé falsification state a fraudulent degree. In this age of digital and social media, it’s hard to imagine anyon...
Task:
This examination is a fill-in examination. You are asked to read the Factual Pattern. After you read the Factual Pattern, proceed to the second section of the Examination. The second section of the Examination contains a report. You will note that there are numbers throughout the report. A wo...
Answer:
Introduction
In our daily living, we are often faced with challenges that affect our well-being in our societies. Among the key challenges that develop in our lifetimes include unemployment, lack of shelter, rejection, that is, discrimination by the society based on race, gender and ethn...
College Assignment Help
"Study now to have fun in college.” Well, now you know how naïve you had been to have believed that. The Indian education system is all about rigidity. You have a vast syllabus to cover, and regular assignments to complete, while taking exams every other day. So, ...
You are Rhonda Kellman, former co-founder of the Boston Beer Company and recent founderof Moonshot Beer. It is clear that your first attempt at starting up the company was fraughtwith problems, as you failed to perform even the most basic of business principles such aspatenting your idea and researc...
College Homework Help
Writing college homework is never easy. It requires understanding the requirements, choosing the homework title, researching, structuring, and writing the solution. However, not all students are competent at the task and need help with college assignments. Thus, they prefer to...
Question:
Discuss about the Standards for Perioperative Nursing.
Answer:
Appendicitis is an inflammatory condition that affects the appendix. It is stipulated that the appendix is functionless in the human body. However, it performs insignificant immunological functions, and for...
College Essay Help
Are you feeling down that you cannot write your admission essay perfectly? Colleges in Canada are known for their excellence and getting admission there is tough. If you are looking forward to submitting an admission essay that is at par with the standards of the college, avail...
Answer:
Family as a social construct
Social construction is actually a theory of understanding knowledge in communication and sociology theory which evaluate the development of shared construction of understandings of the world which form the basis for joint assumption about the reality. I...
College Coursework Help
How often have you wished for a wizard to resolve all coursework issues and help you with a timely solution? How often have you longed for a sorcerer to spell magic and back you up with custom college coursework help, so that you can have a great time, partying with friends ...
Buy College Papers
Buy a college paper. Right, it seems like an excellent plan. Did you know that thousands of students like you do it daily? They have verified its viability, and you can now as well. It's no surprise that many high schools, college, and university students are turning to MyAssignm...
Questions:
1. For each of the following questions, write the hypotheses that would be tested and then determine which hypothesis test should be used. Select from the following four choices.
• 1 proportion Z test
• 2 proportion Z test
• 1 sample t test
• 2 ind...
Question:
Who are the users? To answer this question, you will need to compile a user profile table (Table 1) with information about users including
Overall practice volume and performance ( of questions answered, % of questions answered correctly)
Learning activity (e.g. # lectures watched...
Task
The writeup concept is on C++ syntax, but use Python.
Database
We assume each data item in the database is an floating point number. Each item has an ID from 0 onwards (to the # of items in the database - 1).
You should create a class Database to store the number. T...
