The variables in the datainclude:ID:subject IDnumberAge:age in yearsFEV:FEV in litersHeight:height in inchesSex:Male or FemaleSmoker:non =nonsmoker, Current = currentsmokerIs FEV the same across the threeage groups? Perform ahypothesis test to answer thequestion. Use a = 0.05. What isthe F-statistic? 1. FEV (forced expiratoryvolume) is an index ofpulmonary function thatmeasures the volume of airexpelled after one second ofconstant effort. The datafev.csv containsdeterminations of FEV on654 children ages 3-19 whowere seen in the ChildhoodRespiratory Disease Study inEast Boston, Massachusetts.The variables in the datainclude:

Answered: Image /qna-images/answer/3908283e-4560-45ed-88dd-b949ce06691c.jpg

Answered: The variables in the data include: ID:…

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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I just do letter d and e please and show work thank you A group of students measure the length and width of a random sample of beans. They are interested in investigating the relationship between the length and width. Their summary statistics are displayed in the table below. All units, if applicable, are millimeters. Mean width: 7.533 Stdev width: 0.905 Mean height: 13.433 Stdev height: 1.727 Correlation coefficient: 0.8429 a) The students are interested in using the width of the beans to predict the height. Calculate the slope of the regression equation. Correct b) Write the equation of the best-fit line that can be used to predict bean heights. Use x to represent width and y to represent height. y=1.3162+1.6085xCorrect c) What fraction of the variability in bean heights can be explained by the linear model of bean height vs width? Express your answer as a decimal. Correct d) If, instead, the students are interested in using the height of the beans to predict the…
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