The t-test for the difference between the means of two independent populations assumes that the respective:

A) sample sizes are equal
B) sample variances are equal
C) populations are approximately normal
D) all of these
E) none of these

T-Test

A statistical test used to determine if there is a significant difference between the means of two groups.

Independent Populations

Populations that are not connected or influenced by each other, implying that the observations in one population are not affected by those in another.

Approximately Normal

Describes a distribution that closely follows a normal distribution, with slight deviations.