Exhibit 10

question 48

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.Assuming α = 0.05,which of the following is the appropriate critical value?

---

Definitions:

Issued Stock

Refers to the number of shares that a company has officially issued to shareholders.

Preferred Stockholders

Investors who own preferred shares in a company, which typically gives them priority over common stockholders in terms of dividends and assets in the event of liquidation.

Corporate Creditors

Entities or individuals that have lent money or extended credit to a corporation and have a right to be repaid.

Charter

A formal document issued by a sovereign or state outlining the rights, privileges, or authority granted to an individual, corporation, or city.