SOLUTION: A university president asked the best statistics teacher in their university to estimate the average age of the students at their university. How big a sample do they need to use?
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Question 1062597: A university president asked the best statistics teacher in their university to estimate the average age of the students at their university. How big a sample do they need to use? The teacher would like to be 99% confident that the estimate should be accurate within a year. From a previous study, the standard deviation of the ages is known to be e years. Answer by Fombitz(32388) (Show Source):
