Impact of College Roommates on GradesIn this exercise, we investigate answers to the questions: How much of an effect does your roommate have on your grades? Inparticular, does it matter whether your roommate brings a videogame to college? A study was conducted involving n = 210 first-yearstudents who were randomly assigned a roommate. Table 1 gives summary statistics on grade point average (GPA) for the firstsemester depending on whether the student and/or the roommate brought a videogame to campus.StudentRoommatebroughtvideogame videogamebroughtSample size Mean GPASt. Dev.NoNo883.1280.590YesNo443.0390.689NoYes382.9320.699YesYes402.7540.639Table 1 Videogames and GPAWe consider the effect of neither student bringing videogames compared to both students bringing them.(a) Find a 95% confidence interval for the difference in means between students in rooms in which neither the student nor theroommate brings a videogame and students in rooms in which both the student and the roommate bring a videogame HN - Hy.where uy represents mean GPA for students for whom neither the student nor the roommate brings a videogame and µyrepresents mean GPA for students for whom both the student and the roommate bring a videogame.MacPook AirDII888F10FBF9F7F4F5

As the difference between the GPA of students whose roommate brings a video game and does not bring…

Answered: ct of College Roommates on Grades s…

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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The following table represents the results of the study which compares effects of regular coffee vs decaffeinated coffee. The outcome is a development of headache. Regular coffee Headaches 17 Decaffeinated coffee 9 Total 26 No headaches 51 55 106 Which of the values best represents the risk difference(RD) in this study?
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Investigation 3.2: Valence Differences Between R&B and Rap Genres (Paired)A music fan claims that R&B songs tend to have a more positive tone on average than do Rapsongs. The individual collected two independent random samples from the population of SpotifySongs. Fifteen R&B songs and another fifteen Rap songs were collected and their Valence wasrecorded. The music fan believed that pairing the song by their Danceability may provideadditional information. Danceability describes how suitable a track is for dancing based on acombination of musical elements including tempo, rhythm stability, beat strength, and overallregularity. A value of 0.0 is least danceable and 1 is most danceable. Thus, the individual pairedthe R&B song with the lowest danceability with the Rap song with the lowest danceability,followed by the second and second, third and third. She continued this process until the R&Bsong with the highest danceability was paired with the Rap song with the…
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