Determine if binary representation of minority groups exists. Although the function requires a vector for the population vector and a vector for the representatives, only the representatives' is evaluated.
Vector for the representatives
This function is not concerned with proportions, and a single representative from any of possibly multiple minority groups is considered as "minorities present". The majority group must be in first position of the vector. All groups in positions 2 to n are considered minority groups; no test is applied to check whether the groups are numerical minorities.
TRUE if minority groups are present among the representatives, FALSE if they are absent.