What inference can you make about black female jury duty in the north ??

Women's representation in U.S. juries has grown over the past hundred years because of legislation and court decisions. Rulings in the federal and state courts expanded the involvement of women in juries.

Explanation:

The push for the rights of women's jury created similar controversy to the women's suffrage campaign, permeating the media with claims for and against. Many states allowed women to sit much earlier on juries than others.The matron jury was an early derogation from the exclusion of women from juries. From English common law matrons in American colonies were sometimes called upon to provide advice on pregnancy and childbirth in cases involving pregnant women.

Marshall plan is the answer.