In the following estimated multiple regression model, we study the amount of sleep (in minutes) an average person gets every night. Each observation is a day, and if the day is a holiday, Holiday = 1; if the day is Monday, Monday = 1. In other words, all independent variables are dummy variables. sleep = 458.5 + 8.6Holiday – 4.9Monday – 7.7Tuesday – 7.4Wednesday – 4.7 Thursday + 23.4Friday + 30.6Saturday a. Explain why Sunday is not included in the model as an independent variable. b. Explain in plain English the meaning of the intercept 458.5. Does this number make sense? c. According to the model, how much sleep does an average person get on a day that is both a Saturday and a Holiday?

In the following estimated multiple regression model, we study the amount of sleep (in minutes) an average person gets every night. Each observation is a day, and if the day is a holiday, Holiday = 1; if the day is Monday, Monday = 1. In other words, all independent variables are dummy variables. sleep = 458.5 + 8.6Holiday – 4.9Monday – 7.7Tuesday – 7.4Wednesday – 4.7 Thursday + 23.4Friday + 30.6Saturday a. Explain why Sunday is not included in the model as an independent variable. b. Explain in plain English the meaning of the intercept 458.5. Does this number make sense? c. According to the model, how much sleep does an average person get on a day that is both a Saturday and a Holiday?

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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