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a. Decide, at the 10% significance level, whether the data provide sufficient evidence to conclude that x is useful for predicting y. o. Find a 90% confidence interval for the slope of the population regression line.

a. Decide, at the 10% significance level, whether the data provide sufficient evidence to conclude that x is useful for predicting y. o. Find a 90% confidence interval for the slope of the population regression line.

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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For the data and sample regression equation shown below, do the following. a. Decide, at the 10% significance level, whether the data provide sufficient evidence to conclude that x is useful for predicting y. b. Find a 90% confidence interval for the slope of the population regression line. 1 4 y = 6.5 – 1.7x Ex = 10, Ex;? = 30, b, = - 1.7, and Se = 3.4857 y 7 3 - 1 Click here to view the critical t-values page 1. Click here to view the critical t-values page 2. ..... a. What are the hypotheses for the test? O A. Ho: B1 =0 and Ha: B1 #0 О В. Но: В1 #0 and Ha: B1 %3D0 O C. Ho: B1 = 0 and Ha: B1 <0 D. Ho: B1 30 аnd Ha: Bi > 0 What is the test statistic? t = (Round to two decimal places as needed.) Find the P-value. Choose the correct range of values below. A. P>0.10 В. Р<0.01 C. 0.01 <P< 0.05 D. 0.05 <P< 0.10 Which of the following is the correct conclusion for the hypothesis test? A. Reject Ho; the data provide sufficient evidence to conclude that x is useful for predicting y. B. Do not reject Ho; the data provide sufficient evidence to conclude that x is useful for predicting y. C. Do not reject Ho; the data do not provide sufficient evidence to conclude that x is useful for predicting y. D. Reject Ho; the data do not provide sufficient evidence to conclude that x is useful for predicting y. b. Find a 90% confidence interval for the slope of the population regression line. The 90% confidence interval for B, is from to (Round to three decimal places as needed.)
Transcribed Image Text:For the data and sample regression equation shown below, do the following. a. Decide, at the 10% significance level, whether the data provide sufficient evidence to conclude that x is useful for predicting y. b. Find a 90% confidence interval for the slope of the population regression line. 1 4 y = 6.5 – 1.7x Ex = 10, Ex;? = 30, b, = - 1.7, and Se = 3.4857 y 7 3 - 1 Click here to view the critical t-values page 1. Click here to view the critical t-values page 2. ..... a. What are the hypotheses for the test? O A. Ho: B1 =0 and Ha: B1 #0 О В. Но: В1 #0 and Ha: B1 %3D0 O C. Ho: B1 = 0 and Ha: B1 <0 D. Ho: B1 30 аnd Ha: Bi > 0 What is the test statistic? t = (Round to two decimal places as needed.) Find the P-value. Choose the correct range of values below. A. P>0.10 В. Р<0.01 C. 0.01 <P< 0.05 D. 0.05 <P< 0.10 Which of the following is the correct conclusion for the hypothesis test? A. Reject Ho; the data provide sufficient evidence to conclude that x is useful for predicting y. B. Do not reject Ho; the data provide sufficient evidence to conclude that x is useful for predicting y. C. Do not reject Ho; the data do not provide sufficient evidence to conclude that x is useful for predicting y. D. Reject Ho; the data do not provide sufficient evidence to conclude that x is useful for predicting y. b. Find a 90% confidence interval for the slope of the population regression line. The 90% confidence interval for B, is from to (Round to three decimal places as needed.)
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