Question
Suppose we are interested in the proportion of undergrads in city A who have PS5. (a) How many student do we need to survey, so
Suppose we are interested in the proportion of undergrads in city A who have PS5.
(a) How many student do we need to survey, so that [ x d, x + d] is a 95% two-sided confidence interval for , where d is a given constant and x is the sample mean of the surveyed students?
(b) If we know that > 3/4, how many samples will be sufficient?
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Linear Algebra and Its Applications
Authors: David C. Lay
4th edition
321791541, 978-0321388834, 978-0321791542
