The Following Model Was Created to Show the Association Between

question 40

Multiple Choice

The following model was created to show the association between the number of massagesreceived per month and self-predicted stress level: Stress level=10-0.02(number of massages permonth) . The coefficient of determination for the model is 0.066 or 6.6%. Choose the true statementregarding this model.

• A)The model shows that there is a negative association between stress level and number ofmonthly massages, but the relatively small coefficient of determination suggests that verylittle of the variation is explained by the model, so the model is probably not very good atpredicting stress level.
• B)The model shows that on average a person getting no massages will always have a stresslevel of 10.
• C)The model shows that getting even one massage a month will decrease your stress level.
• D)None of these.

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Definitions:

Air

A mixture of gases that constitute the Earth's atmosphere, primarily composed of nitrogen, oxygen, argon, and carbon dioxide.

Unbalanced Reaction

A chemical equation where the number of atoms for each element is not the same on both sides of the equation.

Gunpowder

A mixture of saltpeter (potassium nitrate), sulfur, and charcoal (carbon) that explodes when ignited.

Potassium Nitrate

A chemical compound with the formula KNO3, used as a fertilizer, in food preservation, and in the manufacture of gunpowder.