A survey of 16 energy drinks noted the caffeine concentration of each drink in milligrams per ounce.
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A survey of 16 energy drinks noted the caffeine concentration of each drink in milligrams per ounce. The results are given in the table below.
| 9.2 | 9.1 | 7.5 | 7.6 | 7.9 | 8.7 | 8.8 | 8.8 |
| 8.9 | 9.1 | 8.3 | 9.0 | 9.1 | 8.3 | 8.6 | 9.0 |
Find the mean and sample standard deviation of these data. Round to the nearest hundredth.
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