12th Edition

ISBN: 9780321836960

Author: Mario F. Triola

Publisher: PEARSON

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‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements ar…

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Textbook Question

Chapter 4.3, Problem 25BSC

Dosage Calculations. In Exercises 21–26, 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 a concentration of “1 milligram in 1 milliliter solution,” and another group of physicians was given bottles labeled with a ratio of “1 milliliter of a 1:1000 rotation.” 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”)

Ratio Label

(“1 milliliter of a 1:1000 solution”)

25. Which Group Did Better?

a. For the physicians given the bottles labeled with a concentration, find the percentage of correct dosage calculations, then express it as a probability.
b. For the physicians given the bottles labeled with a ratio, find the percentage of correct dosage calculations; then express it as a probability.
c. Does it appear that either group did better? What does the result suggest about drug labels?

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Chapter 4.3, Problem 24BSC

Chapter 4.3, Problem 26BSC

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Chapter 4 Solutions

Elementary Statistics

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Solution Summary: The author explains the percentage of correct dosage calculations given that the bottles labeled with a concentrations is 78.6%.

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