please answer a PROBLEM 5:38Data on pollution and cost of medical care for elderly people were given in Exercise 5.17 andare also shown here. The following data give a measure of pollution (micrograms of particulatematter per cubic meter of air) and the cost of medical care per person over age 65 for sixgeographic regions of the United States:Cost ofMedicalCareRegionPollutionNorth30.0915Upper SouthDeep SouthWest South31.889132.196826.8972Big Sky30.4952West40.0899The equation of the least-squares regression line for this data set is,where y = 1082.2 - 4.691 ! medical cost and x! pollution.a. Compute the six residuals.b. What is the value of the correlation coefficient for this data set? Does the value of r indicatethat the linear relationship between pollution and medical cost is strong, moderate, or weak?Explain.c. Construct a residual plot. Are there any unusual features of the plot?d. The observation for the West, (40.0, 899), has an x value that is far removed from the otherx values in the sample. Is this observation influential in determining the values of the slopeand/or intercept of the least-squares line? Justify your answer

Answered: Data on pollution and cost of medical…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 2AGP

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