In order to improve the grades of students at UTC, several incentive programs have been introduced. Results of random samples of grades from after and before the incentive programs are given below. 
a.Give the hypotheses.
b.Compute the test statistic.
c.At a 0.1 level of significance, test tto determine whether the incentive programs have significantly increased the average grades.
Definitions:
Property Owners
Individuals or entities that legally possess ownership rights over various forms of property, such as land, buildings, or intellectual property.
Economic Interests
The financial goals or motivations of an individual, organization, or country.
Employees
Individuals who are hired to perform services or tasks for compensation under the direction and control of an employer.
Kingsley Davis
A notable sociologist and demographer who contributed to the study of population theory and urbanization.
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