A Biopsychologist Is Interested in How Quickly Rats Learn a Complicated

question 74

Multiple Choice

A biopsychologist is interested in how quickly rats learn a complicated maze.He puts 5 rats,labeled A,B,C,D,and E,in a box.He wants to run two of the rats through a maze,one rat at a time.How many subsets of 2 rats could he choose to run through the maze if order does NOT matter?

• A)10
• B)15
• C)20
• D)40

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Definitions:

Division I

The highest level of intercollegiate athletics sanctioned by the National Collegiate Athletic Association (NCAA) in the U.S., known for its rigorous competition and athletic scholarships.

College Football

An American football played by teams of student athletes fielded by American colleges, universities, and military academies.

Continuous Random Variable

A variable that can take an infinite number of possible values within a given range.

Probabilities

The measure of the likelihood that an event will occur, represented as a number between 0 and 1, where 1 indicates certainty.