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:

Infant Mortality Rate

A statistical measure that records the number of deaths of infants under one year of age per 1,000 live births.

Social Status

The position or rank of a person or group, within the society.

Birth Canal

The passage comprising the cervix, vagina, and vulva through which a fetus passes during childbirth.

Human Childbirth

The process of delivering a baby from the womb of a human female, including stages labor, delivery, and postpartum period.