Which of the Following Processes Probably Caused the Failure of This

question 16

Multiple Choice

Which of the following processes probably caused the failure of this riverbank in Costa Rica?

• A) a combination of higher river level and stronger current after a recent storm
• B) a lahar from one of Costa Rica's volcanoes
• C) a rock slide triggered by an earthquake
• D) soil creep

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Definitions:

Sample Mean

The arithmetic average of a sample set of data, used to estimate the population mean.

Normally Distributed

Describes a data set that follows a bell-shaped curve where most observations cluster around the mean and probabilities for values taper off symmetrically towards both extremes.

Standard Deviation

Standard deviation is a measure of the amount of variation or dispersion of a set of values, indicating how much the values in the set differ from the mean.

Random Samples

A sample from a population that is chosen in such a way that every member of the population has an equal chance of being selected.