In a recent survey of 655 working Americans ages 2534, the average weekly amount spent on lunch

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In a recent survey of 655 working Americans ages 25–34, the average weekly amount spent on lunch was \($44.60\) with standard deviation \($2.81\). The weekly amounts are approximately bell-shaped.

a. Estimate the percentage of amounts that are between \($36.17\) and $53.03.

b. Estimate the percentage of amounts that are between \($41.79\) and $47.41.

c. Between what two values will approximately 95% of the amounts be?

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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