What Is an Ephemeral Stream

question 1

Multiple Choice

What is an ephemeral stream?

• A) A stream that flows perennially through the desert supporting lush vegetation.
• B) A stream that flows perennially through the desert but supports little to no vegetation because of its high mineral content.
• C) A desert stream that contains water only immediately following a rain event.
• D) A steep-walled canyon that was formed by wind erosion.

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Definitions:

Normal Distribution

A probability distribution that is symmetric about the mean, depicting that data near the mean are more frequent in occurrence than data far from the mean.

Binomial Distribution

A probability distribution that models the number of successes in a fixed number of independent Bernoulli trials with the same probability of success.

F-distribution

A probability distribution that arises in the analysis of variance and is used to calculate whether two observed variances are significantly different.

Matched Pairs

A study design where subjects are paired based on certain criteria, ensuring that each pair is similar except for the treatment given.