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1. To estimate the average time it takes to assemble a certain computer component, the industrial engineer at an electronic firm timed 40 technicians in the performance of this task, getting a mean of 12.73 minutes and a standard deviation of 2.06 minutes.

a. What can we say with 99 % confidence about the maximum error if x-bar = 12.73 is used as a point estimate of the actual average time required to do the job?

b. Use the given data to construct a 98 % confidence interval for the true average time it takes to assemble the computer component.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9375311

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