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A Multiple-Choice Test Has 30 Questions

question 143

Multiple Choice

A multiple-choice test has 30 questions. There are 4 choices for each question. A student who has not studied for the test decides to answer all questions randomly. What type of probability distribution can be used to figure out his chance of getting at least 20 questions right?


Definitions:

Monthly Rates

Monthly quantifications or percentages, typically applied in scenarios like rent, subscription fees, or interest calculations.

Annual Rates

The amount or percentage over a year used for calculating changes in financial or other measurements.

Annual Rates

Year-over-year figures or metrics, often used in contexts such as finance or growth measurement.

Monthly Rates

Periodical figures or charges allocated on a per-month basis, common in services and financial agreements.

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