SCENARIO 13-19
the Marketing Manager for a Nationally Franchised Lawn

question 294

Short Answer

SCENARIO 13-19
The marketing manager for a nationally franchised lawn service company would like to study the characteristics that differentiate home owners who do and do not have a lawn service.A random sample of 30 home owners located in a suburban area near a large city was selected; 11 did not have a lawn service (code 0) and 19 had a lawn service (code 1).Additional information available
concerning these 30 home owners includes family income (Income, in thousands of dollars) and lawn size (Lawn Size, in thousands of square feet).
The PHStat output is given below:
Binary Logistic Regression $$\begin{array}{l}\begin{array} { l r r r r } \hline { \text { Predictor } } & \text { Coefficients } & \text { SE Coef } & { Z } & p \text {-Value } \\\hline \text { Intercept } & - 7.8562 & 3.8224 & - 2.0553 & 0.0398 \\\text { Income } & 0.0304 & 0.0133 & 2.2897 & 0.0220 \\\text { Lawn Size } & 1.2804 & 0.6971 & 1.8368 & 0.0662\\\text { Deviance } & 25.3089\end{array}\\\end{array}$$
-Referring to SCENARIO 13-19, what are the degrees of freedom for the chi-square distribution when testing whether the model is a good-fitting model?

---

Definitions:

Freudian Theory

A set of psychoanalytic theories developed by Sigmund Freud that emphasize unconscious motivations and conflicts as the drivers of human behavior.

Scientific Methodology

A systematic approach to research in which a problem is identified, relevant data are gathered, a hypothesis is formulated from these data, and the hypothesis is empirically tested.

Psychosexual Stage

A concept in Freudian psychology that describes the series of stages of childhood development through which sexual impulses are expressed in different ways.

Formation of Personality

The process by which an individual's distinct personality patterns develop over time, influenced by genetic, environmental, and social factors.