Please help with question 3 and the letters A and B quick

Q3) The following table summarizes the result of a clinical test for the Down syndrome (DS) in expected babies. 'Test positive' means that the baby has a significant risk of having DS. Do a hypothesis test for association. Show all your work. Test positive Test negative Baby does have DS 20 5 Baby does not have DS 80 19895 a) For what values is there a type I error, and what clinical problems does it cause? b) For what values is there a type II error, and what clinical problems does it causes