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?
Definitions:
Insulation Job
A service or project involving the application of insulating materials to buildings or structures to reduce energy consumption by maintaining temperature.
Annual Fuel Bill
The total cost incurred by an individual or organization for fuel over the course of a year.
Interest Rate
The cost of borrowing money, typically expressed as a percentage of the amount borrowed, or the return on investment for savings.
Interest Rate
The portion of a loan subject to interest for the borrower, frequently shown as an annual percentage of the outstanding sum of the loan.
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