Concrete expands both horizontally and vertically over time. Measurements of horizontal and vertical expansion (in units of parts per hundred thousand) were made at several locations on a bridge in Quebec City in Canada. The results are presented in the following table. Horizontal Vertical 20 58 15 58 43 55 80 18 58 24 68 32 57 10 69 21 63 a. Compute the least-squares line for predicting vertical expansion (y) from horizontal expansion (x). b. Construct a 95% confidence interval for the slope B1. c. Test HO: B1 = 0 versus H1: B1 0. Can you conclude that horizontal expansion is useful in predicting vertical expansion? Use the a = 0.05 level of significance.

Concrete expands both horizontally and vertically over time. Measurements of horizontal and vertical expansion (in units of parts per hundred thousand) were made at several locations on a bridge in Quebec City in Canada. The results are presented in the following table. Horizontal Vertical 20 58 15 58 43 55 80 18 58 24 68 32 57 10 69 21 63 a. Compute the least-squares line for predicting vertical expansion (y) from horizontal expansion (x). b. Construct a 95% confidence interval for the slope B1. c. Test HO: B1 = 0 versus H1: B1 0. Can you conclude that horizontal expansion is useful in predicting vertical expansion? Use the a = 0.05 level of significance.

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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