Question

The scores for an online exam for a class of 30 students were randomly split into two groups of equal size, Group A and Group B. Group A had a mean score of 91%. It was then found that the entire class had a mean score of 88%. What can be said about the mean score for Group B?(1 point)
Responses

The mean score for Group B will be lower than the mean score for the entire class.
The mean score for Group B will be lower than the mean score for the entire class.
The mean score for Group B will be the same as the mean score for Group A.
The mean score for Group B will be the same as the mean score for Group A.
The mean score for Group B will be equal to the mean score for the entire class.
The mean score for Group B will be equal to the mean score for the entire class.
The mean score for Group B will be higher than the mean score for the entire class.

Answer 1

The mean score for Group B will be lower than the mean score for Group A.