Exhibit 10

question 10

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.Which of the following hypotheses will determine if the students improved their test scores by more than 50 points after being tutored?

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Definitions:

Price of X

The specific cost associated with acquiring good or service X, subject to market conditions and demand.

Price of Y

Refers to the cost associated with acquiring or purchasing a specific good or service, denoted as "Y."

Budget Constraint

A financial limitation that defines the combination of goods and services an individual can afford to purchase given their income and the prices of those goods and services.

Income

The financial gain acquired by an individual or a company, which is typically calculated on an annual basis and obtained through work, investments, or business operations.