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October 31, 2014

Homework Help: Stats

Posted by Jerry on Sunday, November 13, 2011 at 4:54pm.

Suppose the time it takes for a purchasing agent to complete an online ordering process is normally distributed with a mean of 8 minutes and a standard deviation of 2 minutes. Suppose a random sample of 25 ordering processes is selected.

The standard deviation of the sampling distribution of mean times is

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