Maximum error of estimation


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 4.0 seconds.

Answer each of the following (show all work):

(A) How many measurements should be made in order to be 99% certain that the maximum error of estimation will not exceed 1 second?

(B) What sample size is required for a maximum error of 2 seconds?

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Basic Statistics: Maximum error of estimation
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