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A 90 percent confidence interval for the slope of a regression line is determined to be (-0.181, 1.529). Which of the following statements must be true? (A) The correlation coefficient of the data is positive. (B) The sum of the residuals for the data based on the regression line is positive. (C) A scatterplot of the data would show a linear pattern. (D) The slope of the sample regression line is 1.348. (E) The slope of the sample regression line is 0.

A 90 percent confidence interval for the slope of a regression line is determined to be (-0.181, 1.529). Which of the following statements must be true? (A) The correlation coefficient of the data is positive. (B) The sum of the residuals for the data based on the regression line is positive. (C) A scatterplot of the data would show a linear pattern. (D) The slope of the sample regression line is 1.348. (E) The slope of the sample regression line is 0.

MATLAB: An Introduction with Applications
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 90 percent confidence interval for the slope of a regression line is determined to be (-0.181, 1.529). Which of the following statements must be true? (A) The correlation coefficient of the data is positive. (B) The sum of the residuals for the data based on the regression line is positive. (C) A scatterplot of the data would show a linear pattern. (D) The slope of the sample regression line is 1.348. (E) The slope of the sample regression line is 0.
Transcribed Image Text:A 90 percent confidence interval for the slope of a regression line is determined to be (-0.181, 1.529). Which of the following statements must be true? (A) The correlation coefficient of the data is positive. (B) The sum of the residuals for the data based on the regression line is positive. (C) A scatterplot of the data would show a linear pattern. (D) The slope of the sample regression line is 1.348. (E) The slope of the sample regression line is 0.
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