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  3. the mean caffeine content ? of a certain energy dr

The mean caffeine content ? of a certain energy drink is under examination. A measure taken...

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Basic Math

The mean caffeine content ? of a certain energy drink is underexamination. A measure taken on a random sample of size n = 16yieldsx? = 2.4 g/l.

  1. (a) Assuming that the standard deviation is known to be ? = 0.3,find the 95 confidence interval for ?.

  2. (b) If that the standard deviation is unknown but the samplestandard deviation is s = 0.3, find the 95 confidence interval for?.

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