How decaffeinated is decaffeinated coffee? If a researcher wants to estimate the mean caffeine content of a
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How “decaffeinated” is decaffeinated coffee? If a researcher wants to estimate the mean caffeine content of a cup of Starbucks’ decaffeinated espresso with 98 percent confidence and an error of ±0.1 mg, what is the required number of cups that must be tested? Assume a standard deviation of 0.5 mg, based on a small preliminary sample of 12 cups.
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Related Book For 
Essential Statistics In Business And Economics
ISBN: 9781260239508
3rd Edition
Authors: David Doane, Lori Seward
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