The Flying Time of a Drone Airplane Has a Normal

question 41

Multiple Choice

The flying time of a drone airplane has a normal distribution with mean 4.76 hours and standard deviation of .04 hours. What is the probability that the drone will fly more than 4.80 hours?

• A) .1587
• B) .8413
• C) .6587
• D) .3413

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Definitions:

Volcanic Dome

A dome-shaped volcanic feature, largely composed of solidified lava of felsic to intermediate composition.

Caldera

A large volcanic depression that is typically circular to elongate in shape and formed by collapse of a magma chamber.

Volcanic Mudflow

A rapid flow of volcanic ash mixed with water, often melting snow or glaciers, that moves down the slopes of a volcano, also known as a lahar.

Pyroclastic Column

A vertical column of volcanic ash and gas ejected into the atmosphere during an explosive volcanic eruption.