The Following Display from a Graphing Calculator Presents the Least-Squares

question 12

Multiple Choice

The following display from a graphing calculator presents the least-squares regression line for predicting the price of a certain commodity (y) from the price of a barrel of oil (x) . Write the equation of the least-squares regression line.

• A) y=4.71+0.48909 x
• B) y=4.71+0.49 x
• C) y=0.49+0.48909 x
• D) y=0.49+4.71 x

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Definitions:

Mechanical Lift

A device used to assist in the lifting and moving of patients or heavy objects, reducing the risk of injury.

Transfer Roller Sheet

A device made out of fabric designed to help safely move or transfer patients from one surface to another with minimal physical strain.

Body Mechanics

The use of one’s body in an efficient and safe manner during daily activities to prevent injury.

Erect Posture

A body position where the spine is aligned and upright, promoting optimal physiological functioning.