Which of the Following Statements About the Laboratory and Field

question 12

Multiple Choice

Which of the following statements about the laboratory and field studies on evolution of protective coloration in the guppy (as described in the textbook) is false?

• A)Pike cichlids are only found below waterfalls.
• B)Guppies transferred to pools above waterfalls remained drab if killifish were present there.
• C)Guppy predation was greater in pools below waterfalls than above waterfalls.
• D)Killifish can be found both above and below waterfalls.
• E)Substantial evolutionary changes in guppy populations can occur in as few as several years.

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Definitions:

M/M/1 Assumptions

A set of conditions that underlie the M/M/1 queue model, including that arrivals occur according to a Poisson process, service times have an exponential distribution, there is a single server, and the queue has infinite capacity.

Average Number

A statistical measure representing the central or typical value in a set of numbers, often calculated as the sum of all numbers divided by the count of numbers.

μ

The symbol commonly used to represent the mean or average in statistics and mathematics.

M/D/1

A notation in queueing theory that represents a system with a single server, where arrivals follow a Markovian (Poisson) process, service times are deterministically fixed, and there is only one server.