A Research Project Is Conducted by Offering a Randomly Selected

question 64

Multiple Choice

A research project is conducted by offering a randomly selected 300 of the 500 local Toyota Prius owners a chance to use a new fuel additive for 6 months to see if their gas mileage improves. 225 of the 300 randomly selected Prius owners agree to the offer, 50 of those drop out of the project after 1 month, another 50 drop out after 2 months, and 25 more drop out after 3 months. The rest remain for the duration of the project. Using the intention to treat method, the results from how many of the Prius owners who were randomly selected should be included in the research project?

• A) 100
• B) 200
• C) 225
• D) 300

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Definitions:

Atomic Nucleus

The atomic nucleus is the small, dense region at the center of an atom, composed of protons and neutrons, and is the core where most of an atom's mass is concentrated.

Ionizing Power

The ability of a chemical element or electromagnetic radiation to ionize atoms or molecules by altering their charge through the removal or addition of electrons.

Beta Particles

High-energy, high-speed electrons or positrons emitted by certain types of radioactive nuclei during radioactive decay.

Beta Emission

A type of radioactive decay where a beta particle (an electron or positron) is emitted from an atomic nucleus.