Scientists at GlaxoSmithKline Medicines Research Center used high-performance liquid chromatography (HPLC) to determine the amount of drug

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Scientists at GlaxoSmithKline Medicines Research Center used high-performance liquid chromatography (HPLC) to determine the amount of drug in a tablet produced by the company (Analytical Chemistry, Dec. 15, 2009). Drug concentrations (measured as a percentage) for 50 randomly selected tablets are listed in the accompanying table

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a. Descriptive statistics for the drug concentrations are shown at the top of the following SPSS printout on p. 260.
SPSS Output for Exercise 5.68
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Use this information to assess whether the data are approximately normal.
b. An SPSS normal probability plot is shown above. Use this information to assess whether the data are approximately normal.
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Statistics

ISBN: 9780134080215

13th Edition

Authors: James T. McClave

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