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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?
Probability
The chance of a particular outcome occurring, often quantified as a number between 0 (impossible) and 1 (certain).
Subway Waiting
The period of time passengers wait for a subway train to arrive at a station.
Normal Distribution
A probability distribution that is evenly balanced around the mean, indicating that values close to the mean occur more frequently than values that are distant from the mean.
Standard Deviation
An indicator of the spread or distribution of a group of numbers, showing the degree to which these numbers vary from the average.
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