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:

Convertible Notes

Debt instruments that can be converted into a specified number of shares of the issuing company at certain times during its life, usually at the discretion of the note holder.

Liability

A present obligation of the entity to transfer an economic resource as a result of past events.

Equity

The value of an owner's interest in a property or business, after subtracting liabilities.