Multiple Choice
A marketing firm wants to estimate how much root beer the average teenager drinks per year. A previous study found a standard deviation of 1.12 liters. How many teenagers must the firm interview in order to have a margin of error of at most 0.1 liter when constructing a 99% confidence interval?
A) 831.39
B) 832
C) 832.39
D) 833
Correct Answer:
Verified
Correct Answer:
Verified
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