A marketing firm wants to estimate how much root beer the average teenager drinks per year. A previous study found a standard deviation of 1.06 liters. How many teenagers must the firm interview in order to have a margin of error of at most 0.2 liter when constructing a 99% confidence interval? Multiple Choice O O O 185.39 186 186.39 187

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A marketing firm wants to estimate how much root beer the average teenager drinks per year. A previous study found a standard deviation of 1.06 liters. How many teenagers must the firm interview in order to have a
margin of error of at most 0.2 liter when constructing a 99% confidence interval?
Multiple Choice
185.39
186
186.39
187
X
Transcribed Image Text:A marketing firm wants to estimate how much root beer the average teenager drinks per year. A previous study found a standard deviation of 1.06 liters. How many teenagers must the firm interview in order to have a margin of error of at most 0.2 liter when constructing a 99% confidence interval? Multiple Choice 185.39 186 186.39 187 X
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