05 b do x1 and x2 interact perform the appropriate

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: x1*x2) )$coefficients x1 x2 I(x1 * x2) 5 -2 3 (a) Perform the significance of the regression test at α = 0.05. (b) Do x1 and x2 interact? Perform the appropriate test at α = 0.05. (c) Is there sufficient evidence to indicate that x2 contributes information for the prediction of y ? Perform the appropriate test at α = 0.05. What is the p-value of this test? (d) Estimate the change in E (Y ) for every 1-unit increase in x1 when x2 = 2. (e) Estimate the change in E (Y ) for every 1-unit increase in x2 when x1 = 3. STAT 420 Spring 2014: HW 7 4 University of Illinois...
View Full Document

This homework help was uploaded on 04/03/2014 for the course STAT 420 taught by Professor Stepanov during the Spring '08 term at University of Illinois, Urbana Champaign.

Ask a homework question - tutors are online