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Mathematics 8 Online
OpenStudy (anonymous):

By measuring the amount of time it takes a component of a product to move from one workstation to the next, an engineer has estimated that the standard deviation is 3.18 seconds. Answer each of the following (show all work): (A) How many measurements should be made in order to be 98% certain that the maximum error of estimation will not exceed 2.0 seconds? (B) What sample size is required for a maximum error of 1.0 seconds?

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