An Observer on a Planet Sees a Spaceship Approaching at 0.5c

question 97

Multiple Choice

An observer on a planet sees a spaceship approaching at 0.5c. A beam of light projected bythe ship would be measured by this observer to travel at:

• A)0.25c.
• B)0.5c.
• C)c.
• D)1.5c.
• E)2.5c.

---

Definitions:

Population Variance

A measure of the spread or distribution of a set of data values within an entire population.

Confidence Interval

A selection of values, extracted from sample analyses, believed to encompass the value of an unseen population parameter.

Sample Variance

The measure of dispersion within a sample data set, representing the average of the squared differences from the sample mean.

Chi-squared Distributed

A distribution used in hypothesis testing that is derived from the sum of squared deviations between observed and expected frequencies.