Exhibit 10.2 the Following Questions Are Based on the Problem Description and Description

question 75

Multiple Choice

Exhibit 10.2
The following questions are based on the problem description and the output below.
A college admissions officer wants to evaluate graduate school applicants based on their GMAT scores, verbal and quantitative. Students are classified as either successful (Group 1) , marginally successful (Group 2) or not-successful (Group 3) in their graduate studies. The officer has data on 20 current students, 7 successful (Group 1) , 6 marginally successful (Group 2) and 7 not successful (Group 3) . ​ ​ ​ ​
-Refer to Exhibit 10.2. What percentage of observations is classified incorrectly?

• A) 5%
• B) 15%
• C) 95%
• D) 90%

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Definitions:

Confidence Interval

A statistical range, computed from sample data, believed to encompass the actual value of a population parameter.

Normal Distributed

A statistical distribution where observations are equally distributed around the mean, creating a bell-shaped curve.

Significance Level

The threshold below which a p-value is considered statistically significant, typically set at 0.05 or 5%.

Random Sample

A selection made from a group where each individual has the same probability of being chosen.