Lunch break: In a recent survey of 655 working Americans ages 25 - 34, the average weekly amount spent on lunch was $45.84 with standard deviation $3.07. The weekly amounts are approximately bell-shaped. Between what two values will approximately 68% of the amounts be

Lunch break: In a recent survey of 655 working Americans ages 25 - 34, the average weekly amount spent on lunch was $45.84 with standard deviation $3.07. The weekly amounts are approximately bell-shaped. Between what two values will approximately 68% of the amounts be

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

Lunch break: In a recent survey of 655 working Americans ages 25 - 34, the average weekly amount spent on lunch was $45.84
with standard deviation $3.07. The weekly amounts are approximately bell-shaped.
Part 1 of 3
(a) Estimate the percentage of amounts that are between $36.63 and $55.05.
Almost all
of the amounts fall between $36.63 and $55.05.
Part 2 of 3
(b) Estimate the percentage of amounts that are between $39.70 and $51.98.
of the amounts fall between $39.70 and $51.98.
Approximately 95%

(c) Between what two values will approximately 68% of the amounts be?
Approximately 68% of the amounts fall between $
and $

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