Write the Word or Phrase That Best Completes Each Statement

question 163

Short Answer

Write the word or phrase that best completes each statement or answers the question.
-In a study of feeding behavior, zoologists recorded the number of grunts of a warthog feeding by a lake in the 15 minute period following the addition of food. The data showing the weekly number of grunts and the age of the warthog (in days) are listed below:
$\begin{array}{ccl}\hline \text { Week } & \text { Number of Grunts } & \text { Age (days) } \\\hline 1 & 81 & 116 \\2 & 59 & 132 \\3 & 30 & 146 \\4 & 35 & 151 \\5 & 54 & 158 \\6 & 31 & 165 \\7 & 53 & 174 \\8 & 8 & 180 \\9 & 11 & 186 \\\hline\end{array}$

a. Write the equation of a straight-line model relating number of grunts (y) to age $( \mathrm { x } )$ .
b. Give the least squares prediction equation.
c. Give a practical interpretation of the value of $\hat { \beta } _ { 0 }$ if possible.
d. Give a practical interpretation of the value of $\hat { \beta } _ { 1 }$ if possible.

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Definitions:

Ambiguous Faces

Visual stimuli that can be interpreted in more than one way and are often used in psychological experiments to study perception and emotion.

Outgroup Homogeneity

The perception that members of an outgroup are more similar to each other than they actually are, as compared to the ingroup's diversity.

Unjustifiable Negative Behavior

This refers to actions or behaviors that have a negative impact on others or oneself and cannot be logically or morally defended.

Prejudice

Preconceived opinion that is not based on reason or actual experience, often directed towards people or groups.