Drug content assessment:
Drug concentrations (measured as a percentage) for 50 randomly selected tablets are repeated in the accompanying table. The standard method of assessing drug content yields a concentrate variance of 9. Can the scientists at GlaxoSmithKline conclude that the new method of determining drug concentration is less variable than the standard method?
Test using α = 0.01
|
91.28 |
89.35 |
82.85 |
89.93 |
84.62 |
93.44 |
83.77 |
81.79 |
89 |
92.1 |
|
86.96 |
91.17 |
89.74 |
92.59 |
89.36 |
92.83 |
91.9 |
94.83 |
84.21 |
87.61 |
|
90.96 |
89.39 |
89.91 |
88.67 |
86.51 |
88.32 |
83.86 |
92.24 |
89.35 |
92.78 |
|
89.04 |
93.02 |
88.76 |
90.36 |
91.74 |
92.85 |
89.82 |
92.16 |
87.16 |
86.77 |
|
86.12 |
83.33 |
88.2 |
86.35 |
91.2 |
91.82 |
88.32 |
89.26 |
93.84 |
93.19 |
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