Correct option: Is there homogeneity of variance?
Step-by-step explanation:
An independent sample t-test is used to determine whether there is a significant difference between the two population means.
The hypothesis can be defined as:
H₀: There is no difference between the two means, i.e. μ₁ = μ₂.
Hₐ: There is a significant difference between the two means, i.e. μ₁ ≠ μ₂.
The assumptions of t-test are:
The samples are drawn from two independent populations.The population distribution of the two populations must be normally distributed.The variances of the two population must be equal, or there should be homogeneity of the variances.
Thus, the researcher is unsure of whether there is homogeneity of variance or not.
Thus, the correct option is: Is there homogeneity of variance?