Car Commercials a Car Dealer Investigated the Association Between the Number

question 135

Essay

Car commercials A car dealer investigated the association between the number of TV commercials he ran each week and the number of cars he sold the following weekend. He found the correlation to be r = 0.56. During the time he collected the data he ran an average of 12.4 commercials a week with a standard deviation of 1.8, and sold an average
of 30.5 cars with a standard deviation of 4.2. Next weekend he is planning a sale, hoping to sell 40 cars. Create a linear model to estimate the number of commercials he should run
this week. Write a sentence explaining your recommendation.

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Definitions:

Cardinal Trait

A fundamental characteristic that shapes much of an individual's behavior and forms the foundation of their personality.

Personal Disposition

An individual's inherent qualities of mind and character that influence their behavior and reactions.

Pervasive

An adjective describing something that spreads widely throughout an area or a group of people, affecting every part of it.

Motives

Internal drives or reasons that trigger and direct human behavior towards specific goals.