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

question 28

Essay

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?

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Definitions:

Mesophyll

The inner tissue of a leaf, containing many chloroplasts, where photosynthesis occurs.

Palisade

in plant biology refers to the layer of closely packed cells in the leaves of plants where photosynthesis predominantly takes place.

Spongy Layers

Part of a plant's leaves, specifically within the mesophyll, that consists of loosely arranged cells with spaces between them for gas exchange.

Parallel Venation

A pattern of plant leaf venation where veins run parallel to each other along the length of the leaf, common in plants like grasses.