A researcher wishes to estimate within $25 the average cost of postage a community college spends in

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A researcher wishes to estimate within $25 the average cost of postage a community college spends in one year. If she wishes to be 90% confident, how large of a sample would be necessary if the population standard deviation is $80.

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Elementary Statistics A Step By Step Approach

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8th Edition

Authors: Allan Bluman

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Question Posted: Sep 02, 2015 04:01 AM

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A researcher wishes to estimate within $25 the average cost of postage a community college spends in

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Elementary Statistics A Step By Step Approach

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