Which test is employed to compare means of two groups? Explain the test with the help of an example.

Independent Samples t-test:

The independent samples t-test is a statistical test used to compare the means of two independent groups or samples to determine if they are significantly different from each other. It is appropriate when the data are continuous and approximately normally distributed and when the two groups are independent of each other, meaning that the observations in one group are not related to the observations in the other group.

Example: Comparing Exam Scores

Let's consider an example to illustrate the use of the independent samples t-test:

Scenario: A researcher wants to determine if there is a significant difference in the average scores of two groups of students (Group A and Group B) on a math exam.

Hypotheses:

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