Which of the Following Best Explains Why We Can Rule

question 23

Multiple Choice

Which of the following best explains why we can rule out the idea that planets are usually formed by near-collisions between stars?

• A)Studies of the trajectories of nearby stars relative to the Sun show that the Sun is not in danger of a near-collision with any of them.
• B)Stellar near-collisions are far too rare to explain all the planets now known to orbit nearby stars.
• C)A near collision might have created planets,but it could not have created moons,asteroids,or comets.
• D)A near collision should have left a trail of gas extending out behind the Sun,and we see no evidence of such a trail.

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Definitions:

Confidence Interval

An estimated range of values calculated from a given set of sample data, reflecting where the true population parameter is expected to lie with a certain level of confidence.

Normal Distribution

A bell-shaped curve that represents the distribution of many types of data where most observations cluster around the mean.

Standard Error

A measure of the variability or dispersion of a sampling distribution.

Margin of Error

The largest anticipated discrepancy between the actual population parameter and its estimate derived from a sample.