# Reconsider the data in the previous problem. The response measurements in the two columns were collected on

## Question:

Reconsider the data in the previous problem. The response measurements in the two columns were collected on two different days. Fit a new model

\[

y=\theta_{3} x_{2}+\theta_{1} e^{\theta_{2} x_{1}}+\varepsilon

\]

to these data, where \(x_{1}\) is the original regressor from Problem 12.8 and \(x_{2}\) is an indicator variable with \(x_{2}=0\) if the observation was made on day 1 and \(x_{2}=1\) if the observation was made on day 2 . Is there any indication that there is a difference between the two days (use \(\theta_{30}=0\) as the starting value).

**Data From Problem 12.8**

Consider the following observations:

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## Step by Step Answer:

**Related Book For**

## Introduction To Linear Regression Analysis

**ISBN:** 9781119578727

6th Edition

**Authors:** Douglas C. Montgomery, Elizabeth A. Peck, G. Geoffrey Vining