# The analysis described in Problem 1 for the posture measurement data on Shoulder Flexion (SF) may be criticized because information

## Question:

a. How should the subject-specific scalar model for Problem 1 be modified to consider the data layout below? (You will need to add a second random effect to the model that reflects the interaction of Day with Subjects.)

b. Use the computer information provided below to test whether there is a significant main effect of the factor Day. (See the ANOVA table provided below.) What do you conclude?

c. Use the computer output provided below to test whether there is a significant interaction effect between Subjects and Day. If such a test is nonsignificant, why might you be concerned regarding the model that has been fit, and how might you redo the analysis?

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**Related Book For**

## Applied Regression Analysis and Other Multivariable Methods

**ISBN:** 978-1285051086

5th edition

**Authors:** David G. Kleinbaum, Lawrence L. Kupper, Azhar Nizam, Eli S. Rosenberg

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