Exhibit 2-8

question 82

Multiple Choice

Exhibit 2-8.Consider the following frequency distribution. Refer to Exhibit 2-8.How many observations are less than 21?

• A)6
• B)12
• C)18
• D)24

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Definitions:

Degrees Of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution or to a system without violating any constraints.

Left-Tailed Area

Refers to the area under the probability distribution curve to the left of a specified value, often used in hypothesis testing to determine significance.

Multinomial Experiment

An experiment or trial that results in outcomes classified into more than two categories, where the probabilities of outcomes are fixed.

Trials

Refers to the number of times an experiment is performed or the number of individual tests run in a statistical analysis.