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

question 201

Short Answer

SCENARIO 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 Scenario 13-11, what arethe 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:

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the brainstem down the back, and is enclosed in and protected by the vertebral column.

Pupillary Reflex

An involuntary reflex adjustment of the pupil size in response to varying light intensities to control the amount of light entering the eye.

Oculomotor

Relating to the third cranial nerve, which controls most of the eye's movements, including constriction of the pupil and maintaining an open eyelid.

Trigeminal

refers to the fifth cranial nerve responsible for sensation in the face and motor functions such as biting and chewing.