Medecins Sans Frontières- Statistical Testing
My younger brother had a run in earlier with Medecins Sans Frontières. He narrowly escaped from an adverse verdict by the court. What he wants is that he be left alone to run his small cafe.
He asked my oldest brother if he can conduct a survey for him about justice in the Canadian court.
An initial survey was performed right after Medecins Sans Frontières accused my brother of wrong doing. Out of 1852 customers, 53 were against the aggressive tactics of Medecins Sans Frontières. After my brother was cleared by the court, a follow-up survey was performed. Out of 4699 customers, 1751 said they did not agree with the aggressive tactics of Medecins Sans Frontières.
At the 1% significance level, does the data suggest that a higher percentage of customers were against Medecins Sans Frontières after the court case?