x1 = 1.1 + 3.6x2 – 8.2x3 + 1.7x4 1. Suppose that n = 17 data points were used to construct the given regression equation and that the standard error for the coefficient of x2 is 0.328. Construct a 95% confidence interval for the coefficient of x2. (Use 2 decimal places.) lower limit upper limit (b) Using the information of part (a) and level of significance 10%, test the claim that the coefficient of x2 is different from zero. (Use 2 decimal places.) t t critical ±
x1 = 1.1 + 3.6x2 – 8.2x3 + 1.7x4 1. Suppose that n = 17 data points were used to construct the given regression equation and that the standard error for the coefficient of x2 is 0.328. Construct a 95% confidence interval for the coefficient of x2. (Use 2 decimal places.) lower limit upper limit (b) Using the information of part (a) and level of significance 10%, test the claim that the coefficient of x2 is different from zero. (Use 2 decimal places.) t t critical ±
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.6: Regression And Median-fit Lines
Problem 4GP
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x1 = 1.1 + 3.6x2 – 8.2x3 + 1.7x4
1. Suppose that n = 17 data points were used to construct the given regression equation and that the standard error for the coefficient of x2 is 0.328. Construct a 95% confidence interval for the coefficient of x2. (Use 2 decimal places.)
lower limit | |
upper limit |
(b) Using the information of part (a) and level of significance 10%, test the claim that the coefficient of x2 is different from zero. (Use 2 decimal places.)
t | |
t critical ± |
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