On a Multiple-Choice Exam for Which Each Question Has Four $\surd$

question 20

Multiple Choice

On a multiple-choice exam for which each question has four possible answers, the probability of guessing the correct answer is p = 1/4.What is the mean of the binomial distribution for the number of correct guesses for a series of 100 questions?

• A)5
• B)25
• C)\(\surd\)50
• D)50

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Definitions:

Trumpet

A brass wind instrument with a flared bell and three buttons (valves) that is commonly used in classical and jazz music.

Pyrotechnics

The art, craft, or science of making and using fireworks or related explosive devices for entertainment, military, or industrial purposes.

Fourth of July

A U.S. holiday commemorating the Declaration of Independence of the United States, on July 4, 1776.

Pyrotechnics

The art and science of making fireworks, including the design and manufacture of devices that produce light, sound, and smoke for entertainment purposes.