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Estimate the percentage of amounts

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Lunch break: 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?

Reference no: EM132851230

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