A particular allele of interest was found in in 30% of African -Americans and in 70% of European -Americans living in Atlanta.

A particular allele of interest was found in in 30% of African -Americans and in 70% of European -Americans living in Atlanta. A study of West African burial sites found the allele of interest in 15% of the West Africans. Estimate the amount of European admixture that is in the African American population.