A Multiple-Choice Test Consists of Ten Questions, Each with A-E

question 43

Multiple Choice

A multiple-choice test consists of ten questions, each with A-E answers. If you guess the answer to each question, how many questions can you expect to get correct? Also find the standard deviation of the number of questions you can expect to get correct.

• A) 1, 1.6
• B) 3, 1.3
• C) 2, 1.3
• D) 1.2, 1.6
• E) None of the choices are correct

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Definitions:

Phenoxide Ion

The phenoxide ion is a negatively charged ion (an anion) formed when phenol loses a hydrogen ion (H+), characterized by a phenyl group (C6H5) bound to an oxygen atom carrying a negative charge.

Cyclohexanol

A secondary alcohol with the formula C6H11OH, characterized by a six-member ring structure, and used as a precursor in the production of nylon.

Proton Transfer

The movement of a proton (H+) from one molecule to another, a fundamental process in many chemical and biological reactions.

Sodium Hydroxide

A highly caustic metallic base and alkali salt, commonly known as lye or caustic soda, used in various industrial processes.