Use the Following to Answer Questions

question 40

Multiple Choice

Use the following to answer questions
A researcher wanted to determine if using an octane booster would increase gasoline mileage. A random sample of seven cars was selected; the cars were driven for two weeks without the booster and two weeks with the booster. Use the definitions of X₁ and X₂ as given in the table. Consequently, D = X₁-X₂.
-Compute the standard deviation of the differences.

• A) 0.84
• B) 0.78
• C) 0.13
• D) 0.11

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Definitions:

Cardiac

Pertaining to the heart and its associated functions in the circulatory system.

Hypotonic Intravenous Solution

An IV solution with a lower concentration of solutes than the blood plasma, used to hydrate cells by moving water into the cell.

Sodium Chloride

Common table salt, a compound consisting of sodium and chloride ions, used in food and as an electrolyte in medical solutions.

Lactated Ringer's

A solution used in intravenous therapy to replenish body fluids, supply electrolytes, and provide a source of lactate in various medical situations.