Publications by Dominika Markowska-Desvallons
DATA 606 - HW7
Working backwards, Part II. (5.24, p. 203) A 90% confidence interval for a population mean is (65, 77). The population distribution is approximately normal and the population standard deviation is unknown. This confidence interval is based on a simple random sample of 25 observations. Calculate the sample mean, the margin of error, and the sampl...
7023 sym R (1331 sym/36 pcs) 4 img
data 606 - Hw 6
2010 Healthcare Law. (6.48, p. 248) On June 28, 2012 the U.S. Supreme Court upheld the much debated 2010 healthcare law, declaring it constitutional. A Gallup poll released the day after this decision indicates that 46% of 1,012 Americans agree with this decision. At a 95% confidence level, this sample has a 3% margin of error. Based on this inf...
6676 sym R (1174 sym/18 pcs)
DS606 - 5b
If you have access to data on an entire population, say the opinion of every adult in the United States on whether or not they think climate change is affecting their local community, it’s straightforward to answer questions like, “What percent of US adults think climate change is affecting their local community?”. Similarly, if you had dem...
11858 sym R (1282 sym/10 pcs)
Data 606 - LAB 5
In this lab, you will investigate the ways in which the statistics from a random sample of data can serve as point estimates for population parameters. We’re interested in formulating a sampling distribution of our estimate in order to learn about the properties of the estimate, such as its distribution. Setting a seed: We will take some rando...
12182 sym R (2976 sym/19 pcs)
Data 606 - HW 5
Heights of adults. (7.7, p. 260) Researchers studying anthropometry collected body girth measurements and skeletal diameter measurements, as well as age, weight, height and gender, for 507 physically active individuals. The histogram below shows the sample distribution of heights in centimeters. What is the point estimate for the average height...
8354 sym R (1620 sym/39 pcs) 6 img
Project 2 - DATA 607
DATA SET ONE df <-getURL("https://raw.githubusercontent.com/hrensimin05/Project2-/main/Dataset.csv") salary <- read.csv(text=df) head(salary) ## religion X.10k X10k.20k X20k.30k X30k.40k X40k.50k X50k.75k X75k.100k ## 1 Agnostic 27 34 60 81 76 137 122 ## 2 Atheist 12 27 37 52 ...
52 sym R (4003 sym/22 pcs) 2 img
Data 606 - HW 4
Area under the curve, Part I. (4.1, p. 142) What percent of a standard normal distribution \(N(\mu=0, \sigma=1)\) is found in each region? Be sure to draw a graph. (a) \(Z < -1.35\) ## Loading required package: shiny ## Loading required package: openintro ## Loading required package: airports ## Loading required package: cherryblossom ## Loadin...
7082 sym R (3156 sym/66 pcs) 7 img
Data 607 - HW5
Homework 5 # loading csv from github repository db <- "https://raw.githubusercontent.com/hrensimin05/Data_607/master/flights.csv" flights <- read.csv(db) flights ## X X.1 Los.Angeles Phoenix San.Diego San.Francisco Seattle ## 1 ALASKA on time 497 221 212 503 1841 ## 2 delayed 62 ...
342 sym R (8085 sym/15 pcs) 2 img
Document
#1. Using the 173 majors listed in fivethirtyeight.com’s College Majors dataset [https://fivethirtyeight.com/features/the-economic-guide-to-picking-a-college-major/], provide code that identifies the majors that contain either “DATA” or “STATISTICS” url <- "https://raw.githubusercontent.com/fivethirtyeight/data/master/college-majors/ma...
1559 sym R (1222 sym/7 pcs)
Data 606 - lab 3
title: “Probability” author: “Dominika Markowska-Desvallons” output: html_document: includes: in_header: header.html css: ./lab.css highlight: pygments theme: cerulean The Hot Hand Basketball players who make several baskets in succession are described as having a hot hand. Fans and players have long believed in the hot hand phenomenon, ...
12251 sym R (1335 sym/18 pcs)