Question
Ashley and Sanjay are donating blood at a local hospital. As a standard practice, the blood
is screened for anemia (low levels of red blood cells), and the results are given to each
donor as a z score, ranging from negative scores (low amounts of red blood cells, anemic)
to positive scores (high amounts of red blood cells, not anemic). Ashley's z score is -1 while
Sanjay's z score is 0.2. Who has anemia?
a. Ashley
b. Sanjay
c. both
d. neither
is screened for anemia (low levels of red blood cells), and the results are given to each
donor as a z score, ranging from negative scores (low amounts of red blood cells, anemic)
to positive scores (high amounts of red blood cells, not anemic). Ashley's z score is -1 while
Sanjay's z score is 0.2. Who has anemia?
a. Ashley
b. Sanjay
c. both
d. neither
Answers
Steve
well, who has a negative z score?
PsyDAG
A negative Z score does not necessarily indicate anemia. It would have to be significantly low, P < .05,
Z < -1.96, to be considered anemic.
Z < -1.96, to be considered anemic.