QUESTION THREE A repair workshop finds it is having a problem with a pressure gauge it uses. It decides to have it checked by a specialist firm. The following data was obtained. 3.8 Reading of Gauge x (bar) 1.0 Correct reading y(bar) 1.4 1.8 3.4 2.2 3.0 2.14 2.58 2.97 3.38 3.75 96 0 1.33 1.75 (a) Find the least squares line for the data (b) Predict the correct reading, y, for a given gauge level of 3.3 (c) Determine at the 5% level whether there is evidence to indicate a linear relationship between reading of x and correct readings y. (d) Find a 95% confidence interval for B, (e) Find the correlation coefficient (f) By what percentage is the sum of squares of deviations of y about the mean (SS) is reduced by using ý rather than y bar as a predictor of y. (g) Give the ANOVA table for the gauge problem.

QUESTION THREE A repair workshop finds it is having a problem with a pressure gauge it uses. It decides to have it checked by a specialist firm. The following data was obtained. 3.8 Reading of Gauge x (bar) 1.0 Correct reading y(bar) 1.4 1.8 3.4 2.2 3.0 2.14 2.58 2.97 3.38 3.75 96 0 1.33 1.75 (a) Find the least squares line for the data (b) Predict the correct reading, y, for a given gauge level of 3.3 (c) Determine at the 5% level whether there is evidence to indicate a linear relationship between reading of x and correct readings y. (d) Find a 95% confidence interval for B, (e) Find the correlation coefficient (f) By what percentage is the sum of squares of deviations of y about the mean (SS) is reduced by using ý rather than y bar as a predictor of y. (g) Give the ANOVA table for the gauge problem.

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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