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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?
Inclusive Range
The difference between the highest and lowest values in a data set, taking into account both extreme values.
Scores
Quantitative values assigned to individuals or objects for the purpose of comparison or measurement.
Variance
A measure of the dispersion of a set of data points, calculated as the average squared deviation from the mean of the data.
Standard Deviation
A measure of the amount of variation or dispersion of a set of values, indicating how spread out the data points are.
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