Aptitude Test Scores
Two random samples of 40 students were drawn independently from two populations of students.Assume their aptitude tests are normally distributed (total points = 100).The following statistics regarding their scores in an aptitude test were obtained: 
.
-{Aptitude Test Scores Narrative} Test at the 5% significance level to determine whether we can infer that the two population means differ.
Definitions:
Diamonds
A precious gemstone made of carbon, often used in jewelry for its brilliance and durability.
Sole Supplier
A market situation in which only one company provides a particular product or service, potentially leading to monopoly power and less competitive prices.
Monopoly
A reiteration for a market structure with a single seller dominating the whole supply of a particular product or service, without close substitutes.
Substitutes
Goods or services that can be used in place of each other; when the price of one increases, the demand for the other increases.
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