An Unprepared Student Must Take a 7-Question, Multiple-Choice Test That

question 147

Multiple Choice

An unprepared student must take a 7-question, multiple-choice test that has 5 possible answers per question. If the student can eliminate 2 of the possible answers on the first 4 questions, and if she guesses on every question, what is the probability that she will answer every question correctly? ​

• A) Pr(all correct) =
• B) Pr(all correct) =
• C) Pr(all correct) =
• D) Pr(all correct) =
• E) Pr(all correct) =

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Definitions:

Hypnotized

Inducing a trance state in someone, during which they exhibit heightened focus, concentration, and suggestibility.

Sister

A female sibling or a woman who shares a close bond with another individual in a brotherly or sisterly context.

Pretending

The act of behaving in a way that is not genuine, or claiming to have feelings, thoughts, or conditions that are not actual, often as a form of play or to fulfill a particular purpose.

Psychologists

Professionals in the field of psychology, which encompasses the scientific study of the mind and behavior, including cognitive, emotional, and social processes.