Exhibit 10

question 68

Multiple Choice

Exhibit 10.9.A tutor promises to improve GMAT scores of students by more than 50 points after three lessons.To see if this is true,the tutor takes a sample of 49 students' test scores after and before they received tutoring.The mean difference was 53 points better after tutoring,with a standard deviation of the difference equal to 12 points.Let denote the mean of the difference: score after tutoring minus score before tutoring. Refer to Exhibit 10.9.Calculate the value of the test statistic.

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Definitions:

Synergy

The increased effectiveness or achievement that results when individuals or groups work together compared to when they work separately.

Stereotyping

The act of ascribing a fixed, oversimplified, and often exaggerated or prejudiced image or idea to a person or group.

Win-Win

A situation or outcome where all parties involved gain or achieve benefit.

Gender Egalitarianism

The belief in the equality of all genders, advocating for equal rights, responsibilities, and opportunities.