Refer to the data given in the file P2_11.XLS. Consider the average time (in minutes) it takes

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Refer to the data given in the file P2_11.XLS. Consider the average time (in minutes) it takes a citizen of each metropolitan area to travel to work and back home each day.

a. Find are liable measure of the dispersion of these average commute times around the overall sample mean.

b. Between what two numbers can we be approximately 99.7% sure that any one of these average travel times will fall?

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Managerial Statistics

ISBN: 9780534389314

1st Edition

Authors: S. Christian Albright, Wayne L. Winston, Christopher Zappe

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