Question
A company wants to estimate the time its trucks take to drive from city A to city B. The standard deviation is known to be
A company wants to estimate the time its trucks take to drive from city A to city B. The standard deviation is known to be 12 minutes. What sample size is required so that the error does not exceed 2 minutes, with 95 percent confidence?
Multiple Choice
- 36 observations
- 129 observations
- 12 observations
- 139 observations
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Macroeconomics
Authors: Andrew B. Abel, Ben S. Bernanke, Dean Croushore, Ronald D. Kneebone
8th Canadian Edition
134646355, 9780134842615 , 978-0134646350
