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In a sample of 30 people, the average cost of a latte is $4.01. The standard deviation for the sample is $1.85. What is the

In a sample of 30 people, the average cost of a latte is $4.01. The standard deviation for the sample is $1.85. What is the margin of error for a 99% confidence interval?

A) 0.34

B) 0.87

C) 0.93

D) 0.83

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