SCENARIO 12-11
a Computer Software Developer Would Like to Use

question 133

Multiple Choice

SCENARIO 12-11
A computer software developer would like to use the number of downloads (in thousands) for the trial version of his new shareware to predict the amount of revenue (in thousands of dollars) he can make on the full version of the new shareware.Following is the output from a simple linear regression
along with the residual plot and normal probability plot obtained from a data set of 30 different sharewares that he has developed:
$\begin{array}{lr}{\text { Regression Statistics }} \\\hline \text { Multiple R } & 0.8691 \\\hline \text { R Square } & 0.7554 \\\hline \text { Adjusted R Square } & 0.7467 \\\hline \text { Standard Error } & 44.4765 \\\hline \text { Observations } & 30.0000 \\\hline\end{array}$

$\text { ANOVA }$
$\begin{array}{|l|r|r|r|r|r|}\hline &\text { df } & \text { SS } & \text { MS } & F & \text { Significance } F \\ \hline \text { Regression } & 1 & 171062.9193 & 171062.9193 & 86.4759 & 0.0000 \\\hline \text { Residual } & 28 & 55388.4309 & 1978.1582 & & \\\hline \text { Total } & 29 & 226451.3503 & & \\\hline\end{array}$





Simple Linear Regression 12-41
-Referring to Scenario 12-11, which of the following is the correct alternative hypothesis for testing whether there is a linear relationship between revenue and the number of downloads?

• A)\(H _ { 1 } : b _ { 1 } = 0\)
• B)\(H _ { 1 } : b _ { 1 } \neq 0\)
• C)\(H _ { 1 } : \beta _ { 1 } = 0\)
• D)\(H _ { 1 } : \beta _ { 1 } \neq 0\)

Distinguish between various schools of thought within psychology.

Identify the relationship between psychology and physiology.

Understand the impact of evolutionary theory on psychology.

Appreciate the long-standing nature vs. nurture debate and its implications for psychology.

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Definitions:

Somatization Disorder

A mental disorder characterized by the presentation of physical symptoms that suggest illness or injury, but which cannot be fully explained by a medical condition.

Schizophrenia

A long-term mental disorder involving a breakdown in the relation between thought, emotion, and behavior, leading to faulty perception and inappropriate actions.

Anorexia Nervosa

An eating disorder characterized by an obsessive fear of gaining weight, leading to severe restriction of food intake and malnourishment.

Physical Activity

Any bodily movement produced by skeletal muscles that requires energy expenditure, including activities undertaken while working, playing, carrying out household chores, traveling, and engaging in recreational pursuits.