The city of Oakville has 60000 households. A social researcher fromthe University of Toronto collected a simple random sample of 100households. Let the auxiliary variable x be the number of persons livingin the household and y be the weekly spending for food. The researcherobtained the following sample statistics:1001002 X; = 320yi = 10000E09 x? = 1250100E09 y? = 1100000E00 x;y; = 36000Ty = 150000Sx = 1.5Sy = 31.8(a) Using the ratio estimation, estimate the mean weekly spending for foodand place a bound on the error of estimation. You need to report thenumerical values. Show all the steps. Circle the final answer.(b) Using the regression estimation, estimate the total weekly spending forfood and place a bound on the error of estimation. You need to report thenumerical values. USE MSE = 5200. Show all the steps. Circle the finalanswer.

Answered: Image /qna-images/answer/f238f5f5-9fa5-417d-beaf-5284ba985d6c.jpg

Answered: The city of Oakville has 60000…

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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A special education teacher did research on whether or not there is a relationship between the number of students in his class and the number incidents of “acting out” behaviors exhibited by the autistic students in the classroom. He collects data for a year and aggregates them by month. He obtained the statistics below, r= -.863 R2=.74 b= -1.212294 a= 131.176598 10.) How does the presence of more students affect the incidents in the class? a) as students are added the incidences increase b) as students are added the incidences decrease c) the number of students does not affect acting out d) the number of students caused more incidents How much of the variability of acting out is explained by the number of students in the class?___________
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