Give suggestions for the appropriateness of using the model given in Exercise 53. Explain whether it is meaningful to regress after the elimination of observation 7.

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The student is constructing a confidence interval for the slope of the least-squares regression line. Are the conditions for constructing this interval met? A student is investigating the flight distance and airfare from Boston to several travel destinations. The cities were selected at random from a list of large cities. The scatterplot of airfare vs. flight distance, the residual plot of residual vs. flight distance, and the histogram of the residual values are shown. Image 1: Attached Image 2: Attached Image 3: A histogram of residuals has residual on the x-axis, and frequency of residual on the y-axis. Negative 80, 1; negative 60, 1; negative 20, 1; 0, 4; 20, 3; 40, 1; 60, 1. A. No, the observations are not independent of one another B. No, the association between distance and airfare is not linear. C. No, the distribution of residual values is not approximately Normal. D. No, the variability in the residuals is not roughly consistent throughout the residual plot. E. Yes,…

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Chapter 13.5, Problem 63E

To determine

Give suggestions for the appropriateness of using the model given in Exercise 53.

Explain whether it is meaningful to regress after the elimination of observation 7.

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The student is constructing a confidence interval for the slope of the least-squares regression line. Are the conditions for constructing this interval met? A student is investigating the flight distance and airfare from Boston to several travel destinations. The cities were selected at random from a list of large cities. The scatterplot of airfare vs. flight distance, the residual plot of residual vs. flight distance, and the histogram of the residual values are shown. Image 1: Attached Image 2: Attached Image 3: A histogram of residuals has residual on the x-axis, and frequency of residual on the y-axis. Negative 80, 1; negative 60, 1; negative 20, 1; 0, 4; 20, 3; 40, 1; 60, 1. A. No, the observations are not independent of one another B. No, the association between distance and airfare is not linear. C. No, the distribution of residual values is not approximately Normal. D. No, the variability in the residuals is not roughly consistent throughout the residual plot. E. Yes,…

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