A Tutor Promises to Improve GMAT Scores of Students by More

question 126

Multiple Choice

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 µ_D denote the mean of the difference: score after tutoring minus score before tutoring. Which of the following hypotheses will determine if the students improved their test scores by more than 50 points after being tutored?

• A) H₀: µ_D ≤ 0, H_A: µ_D > 0
• B) H₀: µ_D ≥ 0, H_A: µ_D < 0
• C) H₀: µ_D ≤ 50, H_A: µ_D > 50
• D) H₀: µ_D ≥ 50, H_A: µ_D < 50

Differentiate between various types of entrepreneurs.

Recognize the roles and responsibilities of entrepreneurs in running a business.

Identify personality traits and skills critical for entrepreneurial success.

Grasp the concept of serial entrepreneurship and its impact.

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Definitions:

Raises

An increase in salary or wages, typically awarded to an employee based on performance, market adjustments, or as part of a promotion.

Merit Pay

A compensation strategy that rewards employees based on their performance and achievements, rather than on seniority or hours worked.

Disadvantages

The negative or less favorable aspects of a situation, decision, or condition.

Performance-Based Pay System

A compensation system where an employee's pay is based on their performance and achievements rather than a fixed salary.