Given an Urn Containing 4 Red Balls, 2 Blue Balls

question 24

Multiple Choice

Given an urn containing 4 red balls, 2 blue balls, and 3 yellow balls. What is the probability of drawing either a red ball or a blue ball on a single draw?

• A) 2/3
• B) 1/2
• C) 8/9
• D) 1/3
• E) 4/9

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Definitions:

Species Richness

The number of different species represented in a given ecological community, landscape, or region.

Evergreen Shrubs

Shrubs that retain their leaves throughout the year and do not shed them seasonally.

Scrub Oak

A type of small, shrubby oak tree adapted to grow in dry, sandy, or rocky soils, often found in scrublands or pine barrens.

Tallgrass Prairie

A type of grassland ecosystem characterized by tall grasses, which is native to the central part of the United States.