CHAPTER EXERCISESC1. Suppose you surveyed 30 people and asked them whether they are white (W) ornonwhite (N) and how many traumas (serious accidents, rapes, or crimes) they haveexperienced in the past year. You also asked them to tell you whether they perceivethemselves as being in the upper, middle, working, or lower class. Your survey resulted ilthe raw data presented in the following table:a. Identify the level of measurement for each variable. b. Construct raw frequency tables for race.c. What proportion of the 30 individuals is nonwhite? What percentage is white?RaceClassTraumaRaceClassTrauma1WM1WW11W1L2WN.WWM1MWMM.1W1N.1WWWWWN.MWN.LN.W11WWNote: Race: W = white; N = nonwhite; Class: L = lower class; M middle class; U = upper class;W = working class.%3D%3D%3D2.MNMN

a. The variable race is classified into categories-whites (W) and non- whites (N). The numbers in…

Answered: Suppose you surveyed 30 people and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Summary: This study aimed to determine whether exposure to Artificial Light At Night (ALAN) while sleeping is associated with the prevalence and risk of obesity, as previous research has shown a link between short sleep and obesity. The study involved analyzing data from 43,722 women aged 35 to 74 years in the US who had no history of cancer or cardiovascular disease and were not shift workers, daytime sleepers, or pregnant. The women reported their ALAN exposure at enrollment, and the data were analyzed from 2017 to 2018. ALAN exposure was categorized as 'No ALAN Exposure', and 'Any ALAN Exposure' (small nightlight, light outside the room, and light or television in the room). The presence of obesity was determined based on the measurement of general obesity, defined as having a body mass index (BMI) (calculated as weight in kilograms divided by height in meters squared) of 30.0 or higher. Research Question: Is artificial light at night while sleeping associated with obesity? Results:…
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