A Local Tire Dealer Wants to Predict the Number of Tires

question 40

Short Answer

A local tire dealer wants to predict the number of tires sold each month. He believes that the number of tires sold is a linear function of the amount of money invested in advertising. He randomly selects 6 months of data consisting of monthly tire sales (in thousands of tires) and monthly advertising expenditures (in thousands of dollars). Residuals are calculated for all of the randomly selected six months and ordered from smallest to largest. Determine the normal score for the third residual in the ordered array.

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Definitions:

Plane Joint

A type of synovial joint that allows for only gliding movement in various planes, commonly found in the carpals of the wrist.

Opposition

The movement that involves bringing the thumb and a finger together.

Reposition

The act or process of placing or arranging something in a different position.

Excursion

The movement of a structure or part away from its resting position, often used in the context of muscle movement or joint mobility.