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Mathematics 13 Online
OpenStudy (dboyette):

by measuring the amount of time it takes a component of product to move from one workstation to the next, an engineer has estimated that the standard deviation is 3.92 seconds. A. how many measurements should be made in order to be 90% certain that the maximum error of estimation will not exceed 2.0 seconds? B. What sample size is required for a maximum error of 1.5 seconds?

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