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 are the lower and upper limits of the 95% confidence interval estimate for the mean change in revenue as a result of a one thousand increase in the number of downloads?
Definitions:
Taxi Ride
A transportation service where a passenger is transported via a taxi from one location to another for a fee.
Correlation
Correlation is a statistical measure that describes the extent to which two or more variables fluctuate together, indicating the strength and direction of their relationship.
Standard Deviation
Standard deviation measures the amount of variation or dispersion of a set of values from the mean, indicating how spread out the data points are.
Yachts
Luxurious vessels used for personal or sporting purposes, often associated with leisure sailing or racing.
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