Problem 23BSC
Dosage Calculations. In Exercise, use the data in the accompanying table, which lists the numbers of correct and wrong dosage amounts calculated by physicians. In a research experiment, one group of physicians was given bottles of epinephrine labeled with aconcentration of “1 milligram in 1milliliter solution,” and another group of physicians was given bottles labeled with a ratio of “1milliliterof a 1:1000 solution.” The two labels describe the exact same amount, and the physicians were instructed to administer 0.12 milligrams of epinephrine. The results were reported in the New York Times.

Correct Dosage Calculation 
Wrong Dosage Calculation 
Concentration Label (“1 milligram in 1 milliliter solution”) 
11 
3 
Ratio Label (“1 milliliter of a 1:1000 solution”) 
2 
12 
Correct or Concentration If one of the physicians is randomly selected, find the probability of getting one who made a correct dosage calculation or was given the bottle with a concentration label.
Solution 23BSC
0.571