How large should the size of a random sample be so that we can be 90% certain

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How large should the size of a random sample be so that we can be 90% certain that the sample mean X will not deviate from the true mean by more than σ/2?

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Mathematical Statistics With Applications In R

ISBN: 9780124171138

2nd Edition

Authors: Chris P. Tsokos, K.M. Ramachandran

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Question Posted: Nov 23, 2015 03:43 AM

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