(a) How many samples were represented? 55 samples (b) How many had exactly one antigen? 27 samples (c) How many had exactly two antigens? 11 samples (d) How many had O-positive blood? 7 samples (e) How many had AB-positive blood? 5 samples (f) How many had B-negative blood? 14 samples (g) How many had O-negative blood? 12 samples (h) How many had A-positive blood? samplesHuman blood can contain the A antigen, the B antigen, both the A and B antigens, or neither antigen. It may or may not also contain the Rh antigen. # of Samples Antigen in Blood Blood is called type A-positive if the individual has the A and Rh but not the B antigen. A person having only the A and B antigens is said to have 17 A type AB-negative blood. A person having only the Rh antigen has type O-positive blood. Other blood types are defined in a similar manner. In a 7 certain hospital, the data, shown to the right, was recorded. Use a Venn diagram to answer parts (a) through (h) about the blood samples. For A and B parts (d) through (h), the presence or absence of antigens determines blood type. 28 B 12 B and Rh 22 Rh 13 None (a) How many samples were represented? 8 A and Rh A, B, and Rh samples