Question: Suppose the location of the ad can be either Top, Center, or Bottom and the color can be Red or Blue. Let \(x_{1}\) denote the size of the ad. Let \(x_{2}, x_{3}\), and \(x_{4}\) be indicator variables that code the location and color of the ad as follows:

1. Provide a regression model in \(x_{1}, x_{2}, x_{3}, x_{4}\) that allows for arbitrary slopes and intercepts for each location and color.
2. State the null hypotheses that the slope between the response and ad size is the same for all locations.
3. Suppose a quadratic model (second degree polynomial) is to be fit to relate the response to ad size. How many parameters would there be in the most general quadratic model that allows different coefficients (both slopes and intercepts) for each location and color?

Price: $2.99

Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document