When Radiation from an Object Passes Through the Interstellar Medium

question 14

Multiple Choice

When radiation from an object passes through the interstellar medium,

• A) the object appears dimmer.
• B) the object appears bluer.
• C) the object appears redder and dimmer.
• D) the object's apparent velocity changes.

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Definitions:

Standard Normal Random Variable

A random variable with a mean of 0 and a standard deviation of 1, following a normal distribution.

Area

The measure of the extent of a two-dimensional figure or shape in a plane.

z

In statistics, a z-score indicates how many standard deviations an element is from the mean.

Normally Distributed Random Variable

A type of random variable whose values are symmetrically distributed around the mean, forming a bell-shaped curve when graphed.