Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

R Studio Lab 5

28/09/2020 Client: sudharsansrinivasp Deadline: 24 Hours

1. For decades it's been suspected that schizophrenia involves anatomical abnormalities in the hippocampus, an area of the brain involved with memory. The following data bearing on this issue are from Suddath et al. (1990) and were used by Ramsey and Schafer (3rd ed., 2013, p. 31. Display 2.2). The researchers obtained MRI measurements of the volume of the left hippocampus from 15 pairs of identical twins discordant for schizophrenia, i.e, one the twin is affected with schizophrenia The data are displayed in the following table. 


 i. use `mutate()` to create a new variable `diff` which is the difference of the MRI measurements of each pair. 


    


    ii. use the pipe `%>%` operator add the new variable `diff` as column to `schizophrenia`.  


    


    iii. use `summarise` to compute the average difference of the MRI measurements. Use the pipe `%>%` operator to string multiple functions.  


    


    iv. use `summarise` to compute the standard deviation of the difference of the MRI measurements. Use the pipe `%>%` operator to string multiple functions.  


    


    v. based on your answers in (iii) and (iv), do you think there is evidence in favor of the initial hypothesis there is difference in the MRI measure


ments of the volume of the left hippocampus between those affected and unaffected with schizophrenia? 




2. The Behavioral Risk Factor Surveillance System (BRFSS) is an annual telephone survey run by the [Centers of Disease Control](http://www.cdc.gov/brfss) in the United States. The BRFSS is designed to identify risk factors in the adult population and report emerging health trends. For example, respondents are asked about their diet and weekly physical activity, their HIV/AIDS status, possible tobacco use, and even their level of healthcare coverage.


 i) How many variables are present in this data set? For each variable, identify its data type (e.g. categorical, continuous).  


    


    ii) Use `summarise` to compute the average of the variable `weight`.


    


    iii) Use `group_by` to group the rows by `exerany` (exercise any). Repeat part (ii) on this grouped data. Comment on what you observe in the average weights between groups. Use the pipe `%>%` operator to string multiple functions.   




> Do not print the data frame (too long, 20K rows), just print the average weights.   


    


    iv) Repeat part (iii) but now use the grouping variables `smoke100` and `gender`. Comment on what you observe in the average weights between groups. Use the pipe `%>%` operator to string multiple functions.  


    


    v) Obtain a random sample of 1000 rows and save this into `cdc.samp1`. 


    


    vi) Repeat parts (ii) to (v) but only using the subset data `cdc.samp1`.  Use the pipe `%>%` operator to string multiple functions.  


    


    vii) Comment on what differences you observed (if any) between the results in the original sample and the smaller sample?


Use `sample()` to generate rolls from biased coin with $Pr(Head) = 0.6$ .




    i) get a sample of size 10 tosses and tally the results    


    


    ii) get a sample of size 30 tosses and tally the results     


    


    iii) get a sample of size 100 tosses and tally the results    


    


    iv) what do you notice with the proportion of heads in each sample?  



Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Academic Master
Top Academic Guru
Smart Tutor
Homework Tutor
Exam Attempter
Accounting & Finance Master
Writer Writer Name Offer Chat
Academic Master

ONLINE

Academic Master

I have been working as a article writer for the past 5 years. With genuine expertise gathered over the course of these years, I will provide you with optimum quality Led articles writing work. You can skim through my portfolio to have an overview of my experience and the projects I have completed. I will be looking forward to avail this opportunity of working with you. Thanks

$40 Chat With Writer
Top Academic Guru

ONLINE

Top Academic Guru

This project is my strength and I can fulfill your requirements properly within your given deadline. I always give plagiarism-free work to my clients at very competitive prices.

$35 Chat With Writer
Smart Tutor

ONLINE

Smart Tutor

Hi, After reviewing your project description, I understand well. I am a highly-skilled writer who has strong visual awareness, exemplary grammar and spelling knowledge, and the ability to analyze and modify. When it comes to missing links and correcting errors, look no farther. Without the need of any online rewriting tool I can turn your old content into a new and exciting piece of plagiarism free writing. Remember, your content could be a first impression. If you send out material that is riddled with misspellings, grammatical errors, and wrong information, you aren’t going to be presenting a good image of your business. Let’s get that content in tip-top shape today.

$60 Chat With Writer
Homework Tutor

ONLINE

Homework Tutor

Hello client, I have gone through the project specifications you have provided and I can easily manage the task. I am an experienced writer with diverse Knowledge in Article writing and Rewriting, Dissertations & Thesis writing, reports, case studies, and Literature Review.

$35 Chat With Writer
Exam Attempter

ONLINE

Exam Attempter

I will help you with your online exams, quizzes and assignment with A+ grades. Please give me a chance and get relax :)

$40 Chat With Writer
Accounting & Finance Master

ONLINE

Accounting & Finance Master

Dear client, after going through this project it matched my skills and since it is among my major fields of expertise and my preferred area that I always cover very comprehensively to meet client’s expectations and give outstanding results. I hereby request we proceed to a chat so as we discuss it details.

$35 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

Is publix a publicly traded company - Chiro osteo support trundle - Consider a sample with data values of 10, 20, 12, 17, and 16. - Twin pipe brake system - Where is love black eyed peas lyrics - Bus wiring - Tattoo machine armature bar setup - Selection criteria commitment to values - Css ww3 - How to cite aca code of ethics in apa paper - All my sons kate - Fiesta spaghetti pasta and sauce price - Miller toy company manufactures a plastic swimming pool - Identify an artifact that embodies or refers to ethical values - Cryptography - Movie speeches with ethos pathos and logos - 1 page APA - Definition of mise en scene - What does oedipus promise to do - Event project plan template - Homework Wk 3 - Where is b43 postcode - Marketing management strategies ferrell hartline pdf - Edu20001 developing literacy assignment 1b folio part b - 3.5 mpa to bar - Community Nursing student repply week # 5 DQ 1 Grettel Hernandez - Linux exercises for beginners - Cfmeu mature age apprentice wages - Characteristics of communicative language teaching - Fin-650 - Ideal gas monatomic or diatomic - Aumentar memoria virtual windows 10 - Hunger games interactive story - Prove the set of real numbers is open - Volume of a truncated cone - Two degrees tyrone song - How is the word myth used in academic context - Cree xlamp mc e - Snort in ids mode - The long necked giraffe and humble pullet - Graduate school comparison worksheet - Assignment - Utilitarianism is a form of what broader ethical theory - Elenco digital analog trainer - Judith sargent murray on the equality of the sexes sparknotes - Algebra with pizzazz in music what does allegro mean - Strong base weak acid equivalence point - Bosch dishwasher water matrix blockage - Theories of Development Case Study X2 - Lord of the flies movie 1963 - Uniform gradient present worth excel - A little bit of soap karaoke - Cie mark scheme abbreviations - Blades inc case study answers chapter 1 - Zillow stock class c - Research paper - Case Brief - Trophy fish company supplies flies and fishing gear - Advanced diploma of legal practice rmit - Narrative of the life of mrs mary jemison - Hunger games transmedia storytelling - Excel chart label position outside end - Simple battleship c++ - I need 600 words report in air force team to promote female students - What does a newspaper article need - Madeleine leininger transcultural nursing theory ppt - Should the us convert to a zero personal income tax - Chemistry - Unit 8 p2 e commerce - Dr nathan currier psychiatrist - First person pronouns in academic writing - Design a module named timesten - The Stanford Prison Experiment - Uni glasgow exam timetable - Theories of Aging Paper - Application form for australia awards scholarship - Technical communication paul anderson pdf - Define enthalpy of formation - Henri claude cosmetics case study - Patricia benner nursing theory application - Issue specific security policy for an organization - Harvard global supply chain management simulation - Prism monochromator vs grating monochromator - Upper fence and lower fence - Qualitative Research - Before and after process improvement ppt - Journal Reflections - 2 pages - How do you find the area of a regular octagon - Urolift cpt - Gluten free bread improver - 4- to 5-page project proposal written to the leadership of your healthcare organization, propose a nursing informatics project for your organization that you advocate to improve patient outcomes or patient-care efficiency - Five devices arranged in a mesh topology - Smoorenburg patent & trademark attorneys - Ocr mei formula booklet - Heathcliff's love for catherine - Module 2 - Orthographic and oblique projection - Presidential debate - The careless language of sexual violence - Colson whitehead the underground railroad pdf