For a knowledge test, the highest possible score is 100. A score of 60 has a percentile rank of 40. What does this indicate?
A. A score of 60 means that 40% of the test questions were answered correctly.
B. Sixty students answered 40% of the test correctly.
C. Forty percent of the students earned scores of at least 60.
D. Forty percent of the scores were 60 or less.
Answer: D
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The initial volume of a sample is 100 ?L. It is diluted with saline by a factor of 4. The final volume is 400 ?L. Testing the diluted sample finds an analyte concentration of 25 ?g/mL
Which of the following expressions can be used to calculate the initial analyte concentration of this sample? A) B) C) D)
A patient with pancreatic cancer exhibits a yellow discoloration to his entire body. The EMT would correctly document this condition as:
A) jaundice. B) cyanotic. C) pallor. D) flushed.
The underlying cause of TTP is:
a. An unregulated coagulation cascade b. Deficiency in VWF multimers c. Deficiency of ADAMTS-13 protease d. Overproduction of cryoprecipitate
A covalently bonded group of atoms with a net positive or negative charge is a(n):
A. molecule. B. ionic compound. C. polar covalent compound. D. polyatomic ion.