The operations manager of a large production plant

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Reference no: EM13863037

The operations manager of a large production plant would like to estimate the mean amount of time a worker takes to assemble a new electronic component.

After observing 120 workers assembling similar devices, the manager noticed that their average time was 16.2 minutes, with a standard deviation of this assembly time of 3.6 minutes.

1) construct a 90% confidence interval for the mean assembly time?

Can you answer this?

Reference no: EM13863037

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