The Weights of the Fish in a Certain Lake Are

question 223

Multiple Choice

The weights of the fish in a certain lake are normally distributed with a mean of 18 lb and a standard deviation of 12. If 16 fish are randomly selected, what is the probability that the mean weight will be between 15.6 and 21.6 lb?

• A) 0.4032
• B) 0.0968
• C) 0.3270
• D) 0.6730

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Definitions:

Asexual Lineages

Populations or species that reproduce without the genetic recombination processes involved in sexual reproduction.

Antagonistic Coevolution

The evolutionary relationship between two species, in which changes in the genetic composition of one species drive reciprocal changes in the genetic composition of the other.

Water Striders

Aquatic insects that are able to walk on the surface of water by distributing their weight over their long legs.

Exaggerated Grasping Structures

Physical adaptations in organisms that allow for improved ability to grasp or hold objects, often seen in limbs or appendages.