TABLE 13-11 A Computer Software Developer Would Like to Use the Number

question 20

Short Answer

TABLE 13-11
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:



-Referring to Table 13-11, what is the value of the test statistic for testing whether there is a linear relationship between revenue and the number of downloads?

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Definitions:

Heuristic

A problem-solving strategy that uses a practical approach or shortcut that produces solutions that are not guaranteed to be optimal but are sufficient for immediate goals.

Balance Theory

A theory concerning the determinants of consistency in three-element cognitive systems.

Childhood Friends

Long-term friendships that begin in childhood, often characterized by high levels of trust and shared experiences.

Work Friends

Refers to friendships that develop in the workplace between colleagues, which can affect job satisfaction and productivity.