A Multiple-Choice Quiz Consists of Fifteen Questions

question 7

Multiple Choice

A multiple-choice quiz consists of fifteen questions. Each question has four responses, and only one of the answers is correct. Find the probability of guessing and getting exactly two correct. Round to four decimal places, if necessary.

• A) 0.3118
• B) 0.003
• C) 0.2895
• D) 0.1559

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Definitions:

Waviness

A form of surface irregularity characterized by wave-like undulations, which is considered when assessing surface texture and quality.

Roughness

Refers to the texture of a surface and is quantified by the deviations in the direction of the normal vector of a real surface from its ideal form.

Micrometer

A micrometer is a precision measuring instrument that can measure extremely small distances, thicknesses, or diameters, often used in machining and mechanical engineering.

Microinch

A unit of length equal to one millionth of an inch, often used in the precision measurement of surface roughness in engineering.