8.2.23-LS Antigek in Blood
Human 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. 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 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 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 parts (d) through (h), the presence or absence of antigens determines
blood type
# of Samples
17
7
26
12
20
12
7
5
(a) How many samples were represented?
A
A and B
B
B and Rh
Rh
None
A and Rh
A, B, and Rh
samples

The table shows population statistics for the ages of best actor and best supporting actor winners at an awards ceremony. the distributions of the ages are approximately bell-shaped. compare the z-scores for the actors in the following situation. best actor best supporting actor muequals42.0 muequals49.0 sigmaequals7.3 sigmaequals15 in a particular year, the best actor was 59 years old and the best supporting actor was 45 years old. determine the z-scores for each. best actor: z equals best supporting actor: z equals (round to two decimal places as needed.) interpret the z-scores. the best actor was (more than 2 standard deviations above more than 1 standard deviation above less than 1 standard deviation above less than 2 standard deviations below) the mean, which (is not, is) unusual. the best supporting actor was (less than 1 standard deviation below more than 1 standard deviation above more than 2 standard deviations below more than 1 standard deviation below) the mean, which (is is not) unusual.